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1

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Quantifying truncation errors in effective field theory (2015)

R. J. Furnstahl, N. Klco, D. R. Phillips, and S. Wesolowski

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): R. J. Furnstahl, N. Klco, D. R. Phillips, and S. Wesolowski Bayesian procedures designed to quantify truncation errors in perturbative calculations of quantum chromodynamics observables are adapted to expansions in effective field theory (EFT). In the Bayesian approach, such truncation errors are derived from degree-of-belief (DOB) intervals for EFT predicti… [Phys. Rev. C 92, 024005] Published Tue Aug 18, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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J=3/2 charmed hypertriton (2015)

H. Garcilazo, A. Valcarce, and T. F. Caramés

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-08-25

Beschreibung: Author(s): H. Garcilazo, A. Valcarce, and T. F. Caramés By solving exact three-body equations, we study the three-baryon system with charm + 1 . We look for possible bound states using baryon-baryon interactions obtained from a chiral constituent quark model. The smaller effect of the Λ c ↔ Σ c conversion reverses the order of the ( I , J ) = ( 0 , 1 / 2 ) and ( I , J ) = ( 0 , 3 / … [Phys. Rev. C 92, 024006] Published Mon Aug 24, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Three-pion exchange nucleon-nucleon potentials with virtual Δ-isobar excitation (2015)

N. Kaiser

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): N. Kaiser The nucleon-nucleon interaction arising from the exchange of three pions and the excitation of Δ ( 1232 ) isobars in intermediate states is studied. Approximating the Δ propagator by the inverse Δ N mass-splitting, analytical expressions are derived for the spectral functions of the isoscalar and isovec… [Phys. Rev. C 92, 024002] Published Mon Aug 10, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Spectra and scattering of light lattice nuclei from effective field theory (2015)

J. Kirscher, N. Barnea, D. Gazit, F. Pederiva, and U. van Kolck

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-11-19

Beschreibung: Author(s): J. Kirscher, N. Barnea, D. Gazit, F. Pederiva, and U. van Kolck An effective field theory is used to describe light nuclei, calculated from quantum chromodynamics on a lattice at unphysically large pion masses. The theory is calibrated at leading order to two available data sets on two- and three-body nuclei for two pion masses. At those pion masses we predict t… [Phys. Rev. C 92, 054002] Published Tue Nov 17, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Enhancement of the CP-odd effect in the nuclear electric dipole moment of ^{6}Li (2015)

Nodoka Yamanaka and Emiko Hiyama

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-05-29

Beschreibung: Author(s): Nodoka Yamanaka and Emiko Hiyama We calculate for the first time the electric dipole moment (EDM) of the Li 6 nucleus within the α + p + n three-body cluster model using the Gaussian expansion method, assuming the one-meson exchange P , CP -odd nuclear forces. It is found that the EDM of Li 6 is 2 times more sensitive to the isovector pion... [Phys. Rev. C 91, 054005] Published Wed May 27, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Supersymmetric inversion of effective-range expansions (2015)

Bikashkali Midya, Jérémie Evrard, Sylvain Abramowicz, O. L. Ramírez Suárez, and Jean-Marc Sparenberg

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-05-27

Beschreibung: Author(s): Bikashkali Midya, Jérémie Evrard, Sylvain Abramowicz, O. L. Ramírez Suárez, and Jean-Marc Sparenberg A complete and consistent inversion technique is proposed to derive an accurate interaction potential from an effective-range function for a given partial wave in the neutral case. First, the effective-range function is Taylor or Padé expanded, which allows high precision fitting of the experimental... [Phys. Rev. C 91, 054004] Published Tue May 26, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Decay width of d^{*} (2380)→NNππ processes (2016)

Yubing Dong, Fei Huang, Pengnian Shen, and Zongye Zhang

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-07-23

Beschreibung: Author(s): Yubing Dong, Fei Huang, Pengnian Shen, and Zongye Zhang The decay widths of four-body double-pion decays d * → p n π 0 π 0 , d * → p n π + π − , and isoscalar parts of d * → p p π 0 π − and d * → n n π + π 0 are explicitly calculated with the help of the d * wave function obtained in a chiral SU(3) quark model calculation. The effect of the dynamical structure on d * 's width is analyzed bot… [Phys. Rev. C 94, 014003] Published Fri Jul 22, 2016

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Testing semilocal chiral two-nucleon interaction in selected electroweak processes (2016)

R. Skibiński, J. Golak, K. Topolnicki, H. Witała, E. Epelbaum, H. Krebs, H. Kamada, Ulf-G. Meißner, and A. Nogga

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-06-24

Beschreibung: Author(s): R. Skibiński, J. Golak, K. Topolnicki, H. Witała, E. Epelbaum, H. Krebs, H. Kamada, Ulf-G. Meißner, and A. Nogga The recently developed semilocal improved chiral nucleon-nucleon interaction is used for the first time to study several electromagnetic and weak processes at energies below the pion production threshold. Cross sections and selected polarization observables for deuteron photodisintegration, nucleon-… [Phys. Rev. C 93, 064002] Published Wed Jun 22, 2016

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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9

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Meaning of the nuclear wave function (2016)

John D. Terry and Gerald A. Miller

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-07-19

Beschreibung: Author(s): John D. Terry and Gerald A. Miller Background: The intense current experimental interest in studying the structure of the deuteron and using it to enable accurate studies of neutron structure motivate us to examine the four-dimensional space-time nature of the nuclear wave function and the various approximations used to reduce it to … [Phys. Rev. C 94, 014002] Published Mon Jul 18, 2016

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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10

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Three-nucleon forces in the 1/N_{c} expansion (2013)

Daniel R. Phillips and Carlos Schat

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2013-09-19

Beschreibung: Author(s): Daniel R. Phillips and Carlos Schat The operator structures that can contribute to three-nucleon forces are classified in the 1/ N c expansion. At leading order in 1/ N c a spin-flavor-independent term is present, as are the spin-flavor structures associated with the Fujita-Miyazawa three-nucleon force. Modern phenomenological three-nucle... [Phys. Rev. C 88, 034002] Published Wed Sep 18, 2013

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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11

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Nuclear polarization corrections to μ-d atoms in zero-range approximation (2013)

J. L. Friar

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2013-09-28

Beschreibung: Author(s): J. L. Friar Nuclear polarization corrections to the 2 P -2 S Lamb shift in μ - d atoms are developed in order ( α 5 ), and are shown to agree with a recent calculation. The nuclear physics in the resulting corrections is then evaluated in zero-range approximation. The dominant part of the correction is very simple in f... [Phys. Rev. C 88, 034003] Published Fri Sep 27, 2013

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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12

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Fully perturbative calculation of nd scattering to next-to-next-to-leading order (2013)

Jared Vanasse

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2013-10-04

Beschreibung: Author(s): Jared Vanasse We introduce a new technique to calculate perturbative corrections to neutron-deuteron ( n d ) scattering that does not require calculation of the full off-shell scattering amplitude. Its relation to the more familiar partial-resummation technique is explained. Also included is a calculation of the SD-... [Phys. Rev. C 88, 044001] Published Thu Oct 03, 2013

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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13

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Approximations of potentials through the truncation of their inverses (2013)

N. C. Brown, S. E. Grefe, and Z. Papp

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2013-10-04

Beschreibung: Author(s): N. C. Brown, S. E. Grefe, and Z. Papp We propose a finite dimensional representation for the potential operator such that it retains some information about the whole Hilbert-space representation. The potential should be represented in a larger basis, then the matrix should be inverted, then truncated to the desired size, and finally inv... [Phys. Rev. C 88, 047001] Published Thu Oct 03, 2013

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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14

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Toroidal quadrupole form factor of the deuteron (2013)

E. Mereghetti, J. de Vries, R. G. E. Timmermans, and U. van Kolck

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2013-09-10

Beschreibung: Author(s): E. Mereghetti, J. de Vries, R. G. E. Timmermans, and U. van Kolck We calculate the toroidal quadrupole moment and form factor of the deuteron, which violate time-reversal symmetry but conserve parity, at leading order in two-flavor chiral effective field theory with perturbative pion exchange. We take into account time-reversal and parity violation owing to the QC... [Phys. Rev. C 88, 034001] Published Mon Sep 09, 2013

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Energy resolution with the Lorentz integral transform (2015)

Winfried Leidemann

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-05-13

Beschreibung: Author(s): Winfried Leidemann A brief outline of the Lorentz integral transform (LIT) method is given. The method is well established and allows treatment of reactions into the many-body continuum with bound-state-like techniques. The energy resolution that can be achieved is studied by means of a simple two-body reaction. From ... [Phys. Rev. C 91, 054001] Published Mon May 11, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Low-energy chiral two-pion exchange potential with statistical uncertainties (2015)

R. Navarro Pérez, J. E. Amaro, and E. Ruiz Arriola

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-05-13

Beschreibung: Author(s): R. Navarro Pérez, J. E. Amaro, and E. Ruiz Arriola We present a new phenomenological nucleon-nucleon ( N N ) chiral potential fitted to 925 p p and 1743 n p scattering data selected from the Granada- 2013 N N database up to a laboratory energy of 125 MeV with 20 short-distance parameters and three chiral constants c 1 , c 3 , and c 4 with χ 2 / ν = 1.02 . Special atte... [Phys. Rev. C 91, 054002] Published Mon May 11, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Announcement: New Associate Editor in Physical Review C (2015)

Benjamin F. Gibson

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-05-06

Beschreibung: Author(s): Benjamin F. Gibson [Phys. Rev. C 91, 040001] Published Thu Apr 30, 2015

Schlagwort(e): Editorials and Announcements

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Muon capture on the deuteron and the neutron-neutron scattering length (2014)

L. E. Marcucci and R. Machleidt

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2014-11-08

Beschreibung: Author(s): L. E. Marcucci and R. Machleidt Background: We consider the muon capture reaction μ−+H2→νμ+n+n, which presents a “clean” two-neutron (nn) system in the final state. We study here its capture rate in the doublet hyperfine initial state (ΓD). The total capture rate for the muon capture μ−+He3→νμ+H3 (Γ0) is also analyzed, although, i... [Phys. Rev. C 90, 054001] Published Fri Nov 07, 2014

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Nucleon-nucleon potentials in phase-space representation (2014)

H. Feldmeier, T. Neff, and D. Weber

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2014-12-17

Beschreibung: Author(s): H. Feldmeier, T. Neff, and D. Weber A phase-space representation of nuclear interactions, which depends on the distance r⃗ and relative momentum p⃗ of the nucleons, is presented. A method is developed that permits us to extract the interaction V(r⃗,p⃗) from antisymmetrized matrix elements given in a spherical basis with angular moment... [Phys. Rev. C 90, 064005] Published Tue Dec 16, 2014

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Leading three-baryon forces from SU(3) chiral effective field theory (2016)

Stefan Petschauer, Norbert Kaiser, Johann Haidenbauer, Ulf-G. Meißner, and Wolfram Weise

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-01-13

Beschreibung: Author(s): Stefan Petschauer, Norbert Kaiser, Johann Haidenbauer, Ulf-G. Meißner, and Wolfram Weise Leading three-baryon forces are derived within SU(3) chiral effective field theory. Three classes of irreducible diagrams contribute: three-baryon contact terms, one-meson exchange, and two-meson exchange diagrams. We provide the minimal nonrelativistic terms of the chiral Lagrangian that contribute... [Phys. Rev. C 93, 014001] Published Mon Jan 11, 2016

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Three-cluster breakup in deuteron-deuteron collisions: Single-scattering approximation (2016)

A. Deltuva and A. C. Fonseca

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-04-08

Beschreibung: Author(s): A. Deltuva and A. C. Fonseca We present results for the three-cluster breakup in deuteron-deuteron collisions at 130 and 270 MeV deuteron beam energy. The breakup amplitude is calculated using the first term in the Neumann series expansion of the corresponding exact four-nucleon equations. In analogy with nucleon-deuteron break… [Phys. Rev. C 93, 044001] Published Wed Apr 06, 2016

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Comparative study of three-nucleon force models in nuclear matter (2015)

Domenico Logoteta, Isaac Vidaña, Ignazio Bombaci, and Alejandro Kievsky

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-06-18

Beschreibung: Author(s): Domenico Logoteta, Isaac Vidaña, Ignazio Bombaci, and Alejandro Kievsky We calculate the energy per particle of symmetric nuclear matter and pure neutron matter using the microscopic many-body Brueckner-Hartree-Fock (BHF) approach and employing the Argonne V18 (AV18) nucleon-nucleon (NN) potential supplemented with two different three-nucleon force models recently const... [Phys. Rev. C 91, 064001] Published Mon Jun 15, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Four-body calculation of elastic deuteron-deuteron scattering (2015)

A. Deltuva and A. C. Fonseca

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): A. Deltuva and A. C. Fonseca Fully converged calculations of deuteron-deuteron elastic scattering observables are performed at energies above three- and four-body breakup threshold. Differential cross sections and analyzing powers are obtained using realistic nucleon-nucleon force models together with the Coulomb repulsion betw… [Phys. Rev. C 92, 024001] Published Wed Aug 05, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Short-range correlations in the deuteron: Chiral effective field theory, meson-exchange, and phenomenology (2015)

Francesca Sammarruca

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-10-20

Beschreibung: Author(s): Francesca Sammarruca High-momentum distributions and short-range correlation probabilities in the deuteron are studied with a variety of modern potentials based on chiral effective field theory up to fifth order in the chiral expansion. Conventional (meson-exchange and phenomenological) interactions are also considered.… [Phys. Rev. C 92, 044003] Published Mon Oct 19, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Null-test signal for T-invariance violation in pd scattering (2015)

Yu. N. Uzikov and A. A. Temerbayev

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-07-14

Beschreibung: Author(s): Yu. N. Uzikov and A. A. Temerbayev The integrated proton-deuteron cross section σ ̃ for the case of the incident proton vector polarization p y p and tensor polarization P x z of the deuteron target provides a null-test signal for time-reversal invariance violating but P -parity conserving (TVPC) effects. We study the null-test observable … [Phys. Rev. C 92, 014002] Published Mon Jul 13, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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D^{*} ΞN bound state in strange three-body systems (2016)

H. Garcilazo and A. Valcarce

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-06-29

Beschreibung: Author(s): H. Garcilazo and A. Valcarce The recent update of the strangeness − 2 ESC08c Nijmegen potential incorporating the NAGARA and KISO events predicts a Ξ N bound state, D * , in the S 1 3 ( I = 1 ) channel. We study if the existence of this two-body bound state could give rise to stable three-body systems. For this purpose we solve the bound … [Phys. Rev. C 93, 064003] Published Mon Jun 27, 2016

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Low-energy theorems for nucleon-nucleon scattering at M_{π} =450 MeV (2016)

V. Baru, E. Epelbaum, and A. A. Filin

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-07-12

Beschreibung: Author(s): V. Baru, E. Epelbaum, and A. A. Filin We apply the low-energy theorems to analyze the recent lattice QCD results for the two-nucleon system at a pion mass of M π ≃ 450 MeV obtained by the NPLQCD Collaboration. We find that the binding energies of the deuteron and dineutron are inconsistent with the low-energy behavior of the corresponding … [Phys. Rev. C 94, 014001] Published Mon Jul 11, 2016

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Maximal isospin few-body systems of nucleons and Ξ hyperons (2016)

H. Garcilazo, A. Valcarce, and J. Vijande

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-08-18

Beschreibung: Author(s): H. Garcilazo, A. Valcarce, and J. Vijande By using local central Yukawa-type interactions that reproduce the low-energy parameters of the latest updates of the Nijmegen ESC08c potentials, we show that the N Ξ , N N Ξ , N Ξ Ξ , and N N Ξ Ξ systems with maximal isospin are bound. Since in these states the strong decay N Ξ → Λ Λ is forbidden by isospin conse… [Phys. Rev. C 94, 024002] Published Wed Aug 17, 2016

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Time-reversal-invariance-violating nucleon-nucleon potential in the 1/N_{c} expansion (2016)

Daris Samart, Carlos Schat, Matthias R. Schindler, and Daniel R. Phillips

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-08-11

Beschreibung: Author(s): Daris Samart, Carlos Schat, Matthias R. Schindler, and Daniel R. Phillips We apply the large- N c expansion to the time-reversal-invariance-violating (TV) nucleon-nucleon potential. The operator structures contributing to next-to-next-to-leading order in the large- N c counting are constructed. For the TV and parity-violating case we find a single operator structure at leadin… [Phys. Rev. C 94, 024001] Published Tue Aug 09, 2016

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Exact calculations of a quasibound state in the K [over ¯] K [over ¯] N system (2015)

N. V. Shevchenko and J. Haidenbauer

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-10-15

Beschreibung: Author(s): N. V. Shevchenko and J. Haidenbauer Dynamically exact calculations of a quasibound state in the K ¯ K ¯ N three-body system are performed using Faddeev-type AGS equations. As input two phenomenological and one chirally motivated K ¯ N potentials are used, which describe the experimental information on the K ¯ N system equally well and produce… [Phys. Rev. C 92, 044001] Published Wed Oct 14, 2015

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Reanalysis of p+p reaction data: Probable absence of a ppK^{−} state (2015)

E. Epple and L. Fabbietti

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-10-16

Beschreibung: Author(s): E. Epple and L. Fabbietti In this work we question the hypothesis that the previously reported structure X(2265) in p + p data is due to the kaonic nuclear bound state “ p p K − ”. We will show that it is rather unlikely that X(2265) , as reported by the DISTO collaboration, corresponds to a kaonic nuclear bound state. The main argu… [Phys. Rev. C 92, 044002] Published Thu Oct 15, 2015

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Partial-wave decomposition of the finite-range effective tensor interaction (2016)

D. Davesne, P. Becker, A. Pastore, and J. Navarro

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-06-08

Beschreibung: Author(s): D. Davesne, P. Becker, A. Pastore, and J. Navarro We perform a detailed analysis of the properties of the finite-range tensor term associated with the Gogny and M3Y effective interactions. In particular, by using a partial-wave decomposition of the equation of state of symmetric nuclear matter, we show how we can extract their tensor parameters dir… [Phys. Rev. C 93, 064001] Published Tue Jun 07, 2016

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Di-neutrons in neutron matter within a Brueckner-Hartree-Fock approach (2016)

Felipe Isaule, H. F. Arellano, and Arnau Rios

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-09-22

Beschreibung: Author(s): Felipe Isaule, H. F. Arellano, and Arnau Rios We investigate the appearance of di-neutron bound states in pure neutron matter within the Brueckner-Hartree-Fock approach at zero temperature. We consider the Argonne v 18 and Paris bare interactions as well as chiral two- and three-nucleon forces. Self-consistent single-particle potentials are calc… [Phys. Rev. C 94, 034004] Published Wed Sep 21, 2016

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Tritium β decay in chiral effective field theory (2016)

A. Baroni, L. Girlanda, A. Kievsky, L. E. Marcucci, R. Schiavilla, and M. Viviani

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2016-08-20

Beschreibung: Author(s): A. Baroni, L. Girlanda, A. Kievsky, L. E. Marcucci, R. Schiavilla, and M. Viviani We evaluate the Fermi and Gamow-Teller (GT) matrix elements in tritium β decay by including in the charge-changing weak current the corrections up to one loop recently derived in nuclear chiral effective field theory ( χ EFT ). The trinucleon wave functions are obtained from hyperspherical-harmonics so… [Phys. Rev. C 94, 024003] Published Thu Aug 18, 2016

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Spin polarization in γd→n⃗p at low energies with a pionless effective field theory (2011)

S.-I. Ando, Y.-H. Song, C. H. Hyun, and K. Kubodera

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-06-15

Beschreibung: Author(s): S.-I. Ando, Y.-H. Song, C. H. Hyun, and K. Kubodera With the use of pionless effective field theory including dibaryon fields, we study the γ d →n⃗ p reaction for the laboratory photon energy E γ lab ranging from threshold to 30 MeV. Our main goal is to calculate the neutron polarization P y ′ defined as P y ′ =( σ + - σ - )/( σ + + σ - ) , where σ + and σ - are the differen... [Phys. Rev. C 83, 064002] Published Tue Jun 14, 2011

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Signatures of the chiral two-pion exchange electromagnetic currents in the ^{2}H and ^{3}He photodisintegration reactions (2011)

D. Rozpędzik, J. Golak, S. Kölling, E. Epelbaum, R. Skibiński, H. Witała, and H. Krebs

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-06-29

Beschreibung: Author(s): D. Rozpędzik, J. Golak, S. Kölling, E. Epelbaum, R. Skibiński, H. Witała, and H. Krebs The recently derived long-range two-pion exchange (TPE) contributions to the nuclear current operator that appear at next-to-leading order (NLO) of the chiral expansion are used to describe electromagnetic processes. We study their role in the photodisintegration of 2 H and 3 He and compare our predic... [Phys. Rev. C 83, 064004] Published Tue Jun 28, 2011

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Three nucleon force effects in intermediate-energy deuteron analyzing powers for dp elastic scattering (2011)

K. Sekiguchi, H. Okamura, N. Sakamoto, H. Suzuki, M. Dozono, Y. Maeda, T. Saito, S. Sakaguchi, H. Sakai, M. Sasano, Y. Shimizu, T. Wakasa, K. Yako, H. Witała, W. Glöckle, J. Golak, H. Kamada, and A. Nogga

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-06-16

Beschreibung: Author(s): K. Sekiguchi, H. Okamura, N. Sakamoto, H. Suzuki, M. Dozono, Y. Maeda, T. Saito, S. Sakaguchi, H. Sakai, M. Sasano, Y. Shimizu, T. Wakasa, K. Yako, H. Witała, W. Glöckle, J. Golak, H. Kamada, and A. Nogga A complete high precision set of deuteron analyzing powers for elastic deuteron-proton ( dp ) scattering at 250 MeV/nucleon (MeV/N) has been measured. The new data are presented together with data from previous measurements at 70, 100, 135 and 200 MeV/N. They are compared with the results of three-nuc... [Phys. Rev. C 83, 061001] Published Wed Jun 15, 2011

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Impulse approximation in nuclear pion production reactions: Absence of a one-body operator (2011)

Daniel R. Bolton and Gerald A. Miller

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-06-25

Beschreibung: Author(s): Daniel R. Bolton and Gerald A. Miller The impulse approximation of pion production reactions is studied by developing a relativistic formalism, consistent with that used to define the nucleon-nucleon potential. For plane wave initial states we find that the usual one-body (1B) expression O 1B is replaced by O 2B =- iK ( m π /2) O 1B / m π , where K ( m ... [Phys. Rev. C 83, 064003] Published Fri Jun 24, 2011

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Efficient calculation of chiral three-nucleon forces up to N^{3}LO for ab initio studies (2015)

K. Hebeler, H. Krebs, E. Epelbaum, J. Golak, and R. Skibiński

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-04-16

Beschreibung: Author(s): K. Hebeler, H. Krebs, E. Epelbaum, J. Golak, and R. Skibiński We present a novel framework to decompose three-nucleon forces in a momentum-space partial-wave basis. The new approach is computationally much more efficient than previous methods and opens the way to ab initio studies of few-nucleon scattering processes, nuclei, and nuclear matter based on higher-... [Phys. Rev. C 91, 044001] Published Wed Apr 15, 2015

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Three-body bremsstrahlung and the rotational character of the ^{12}C spectrum (2015)

E. Garrido, A. S. Jensen, and D. V. Fedorov

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-05-19

Beschreibung: Author(s): E. Garrido, A. S. Jensen, and D. V. Fedorov The electric quadrupole transitions between 0 + , 2 + , and 4 + states in C 12 are investigated in a 3 α model. The three-body wave functions are obtained by means of the hyperspherical adiabatic expansion method, and the continuum is discretized by imposing a box boundary condition. Corresponding expressio... [Phys. Rev. C 91, 054003] Published Mon May 18, 2015

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Modern nuclear force predictions for n-^{3}H scattering above the three- and four-nucleon breakup thresholds (2015)

Rimantas Lazauskas

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-04-09

Beschreibung: Author(s): Rimantas Lazauskas Background: Description of the collision process, which includes breakup, is one of the most challenging problems of the quantum mechanics. Recently I have developed a formalism based on the complex-scaling method, which describes accurately nuclear collisions in three- and four-body systems. [Phys. Rev. C 91, 041001] Published Wed Apr 08, 2015

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Investigation of ^{23}N in a three-body model (2015)

Liuyang Zhang (张柳杨), Zhongzhou Ren (任中洲), Mengjiao Lyu (吕梦蛟), and Chen Ji (计晨)

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-02-18

Beschreibung: Author(s): Liuyang Zhang (张柳杨), Zhongzhou Ren (任中洲), Mengjiao Lyu (吕梦蛟), and Chen Ji (计晨) The neutron-drip-line nucleus 23 N is investigated in a three-body model consisting of a 21 N core and two valence neutrons. Using the Faddeev formalism with the realistic neutron-neutron potential and the neutron-core potential, we calculate the ground-state properties of 23 N including its two-neutro... [Phys. Rev. C 91, 024001] Published Tue Feb 17, 2015

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Resonance-state properties from a phase shift analysis with the S-matrix pole method and the effective-range method (2015)

B. F. Irgaziev and Yu. V. Orlov

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-02-18

Beschreibung: Author(s): B. F. Irgaziev and Yu. V. Orlov Asymptotic normalization coefficients (ANCs) are fundamental nuclear constants playing an important role in nuclear physics and astrophysics. We derive a new useful relationship between ANCs of the Gamow radial wave function and the renormalized (due to the Coulomb interaction) Coulomb-nuclear parti... [Phys. Rev. C 91, 024002] Published Tue Feb 17, 2015

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Medium-heavy nuclei from nucleon-nucleon interactions in lattice QCD (2015)

Takashi Inoue, Sinya Aoki, Bruno Charron, Takumi Doi, Tetsuo Hatsuda, Yoichi Ikeda, Noriyoshi Ishii, Keiko Murano, Hidekatsu Nemura, and Kenji Sasaki (HAL QCD Collaboration)

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-01-17

Beschreibung: Author(s): Takashi Inoue, Sinya Aoki, Bruno Charron, Takumi Doi, Tetsuo Hatsuda, Yoichi Ikeda, Noriyoshi Ishii, Keiko Murano, Hidekatsu Nemura, and Kenji Sasaki (HAL QCD Collaboration) On the basis of the Brueckner-Hartree-Fock method with the nucleon-nucleon forces obtained from lattice QCD simulations, the properties of the medium-heavy doubly magic nuclei such as 16 O and 40 Ca are investigated. We found that those nuclei are bound for the pseudoscalar meson mass M PS ≃470 MeV. The... [Phys. Rev. C 91, 011001] Published Fri Jan 16, 2015

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Covariant spectator theory of np scattering: Deuteron quadrupole moment (2015)

Franz Gross

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-01-27

Beschreibung: Author(s): Franz Gross Until recently, theoretical calculations constrained by precise neutron-proton scattering data have predicted a deuteron quadrupole moment that is too small. In this paper, the quadrupole moment is calculated using the covariant spectator theory with an interaction based on meson exchanges. A detailed analysis of all the relativistic contributions demonstrates that this approach can explain the deuteron quadrupole moment very well. [Phys. Rev. C 91, 014005] Published Mon Jan 26, 2015

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Lightest neutral hypernuclei with strangeness −1 and −2 (2015)

Jean-Marc Richard, Qian Wang, and Qiang Zhao

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-01-14

Beschreibung: Author(s): Jean-Marc Richard, Qian Wang, and Qiang Zhao Our current knowledge of the baryon-baryon interaction suggests that the dineutron (n,n) and its strange analog (n,Λ) are unstable. In contrast, the situation is more favorable for the strange three-body system (n,n,Λ), and even better for the four-body system T≡(n,n,Λ,Λ) with strangeness −2, which ... [Phys. Rev. C 91, 014003] Published Tue Jan 13, 2015

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Fermion-dimer scattering using an impurity lattice Monte Carlo approach and the adiabatic projection method (2014)

Serdar Elhatisari and Dean Lee

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2014-12-02

Beschreibung: Author(s): Serdar Elhatisari and Dean Lee We present lattice Monte Carlo calculations of fermion-dimer scattering in the limit of zero-range interactions using the adiabatic projection method. The adiabatic projection method uses a set of initial cluster states and Euclidean time projection to give a systematically improvable description of... [Phys. Rev. C 90, 064001] Published Mon Dec 01, 2014

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Low-energy theorems for nucleon-nucleon scattering at unphysical pion masses (2015)

V. Baru, E. Epelbaum, A. A. Filin, and J. Gegelia

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-07-08

Beschreibung: Author(s): V. Baru, E. Epelbaum, A. A. Filin, and J. Gegelia The longest-range part of the nuclear force from the one-pion exchange governs the energy dependence of the scattering amplitude in the near-threshold region and imposes correlations between the coefficients in the effective range expansion. These correlations may be regarded as low-energy theorems … [Phys. Rev. C 92, 014001] Published Tue Jul 07, 2015

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Theoretical study of the d^{*} (2380)→dππ decay width (2015)

Yubing Dong, Pengnian Shen, Fei Huang, and Zongye Zhang

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-06-30

Beschreibung: Author(s): Yubing Dong, Pengnian Shen, Fei Huang, and Zongye Zhang The decay widths of the d * → d π 0 π 0 and d * → d π + π − processes are explicitly calculated in terms of our chiral quark model. By using the experimental ratios of cross sections between various decay channels, the partial widths of the d * → p n π 0 π 0 , d * → p n π + π − , d * → p p π 0 π − , and d * → n n π + π 0 channels are also extracted.… [Phys. Rev. C 91, 064002] Published Mon Jun 29, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Solutions of the bound-state Faddeev-Yakubovsky equations in three dimensions by using NN and 3N potential models (2011)

M. R. Hadizadeh, Lauro Tomio, and S. Bayegan

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-05-28

Beschreibung: Author(s): M. R. Hadizadeh, Lauro Tomio, and S. Bayegan A recently developed three-dimensional approach (without partial-wave decomposition) is considered to investigate solutions of Faddeev-Yakubovsky integral equations in momentum space for three- and four-body bound states, with the inclusion of three-body forces. In the calculations of the binding en... [Phys. Rev. C 83, 054004] Published Fri May 27, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Density-dependent nucleon-nucleon interaction from three-nucleon forces (2011)

Alessandro Lovato, Omar Benhar, Stefano Fantoni, Alexey Yu. Illarionov, and Kevin E. Schmidt

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-05-28

Beschreibung: Author(s): Alessandro Lovato, Omar Benhar, Stefano Fantoni, Alexey Yu. Illarionov, and Kevin E. Schmidt Microscopic calculations based on realistic nuclear Hamiltonians, while yielding accurate results for the energies of the ground and low-lying excited states of nuclei with A ⩽12 , fail to reproduce the empirical equilibrium properties of nuclear matter, that are known to be significantly affected by ... [Phys. Rev. C 83, 054003] Published Fri May 27, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Low-energy p-d scattering and ^{3}He in pionless effective field theory (2011)

Sebastian König and H.-W. Hammer

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-06-04

Beschreibung: Author(s): Sebastian König and H.-W. Hammer We calculate low-energy proton-deuteron scattering in the framework of pionless effective field theory. In the quartet channel, we calculate the elastic scattering phase shift up to next-to-next-to-leading order in the power counting. In the doublet channel, we perform a next-to-leading-order calcul... [Phys. Rev. C 83, 064001] Published Fri Jun 03, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Universality of short-range nucleon-nucleon correlations (2011)

H. Feldmeier, W. Horiuchi, T. Neff, and Y. Suzuki

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-10

Beschreibung: Author(s): H. Feldmeier, W. Horiuchi, T. Neff, and Y. Suzuki [Phys. Rev. C 84, 054003] Published Wed Nov 09, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Constraining the neutron-neutron scattering length using the effective field theory without explicit pions (2011)

Johannes Kirscher and Daniel R. Phillips

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-11

Beschreibung: Author(s): Johannes Kirscher and Daniel R. Phillips [Phys. Rev. C 84, 054004] Published Thu Nov 10, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Two and three nucleons in a trap, and the continuum limit (2012)

J. Rotureau, I. Stetcu, B. R. Barrett, and U. van Kolck

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-03-15

Beschreibung: Author(s): J. Rotureau, I. Stetcu, B. R. Barrett, and U. van Kolck We describe systems of two and three nucleons trapped in a harmonic-oscillator potential with interactions from the pionless effective field theory up to next-to-leading order (NLO). We construct the two-nucleon interaction using two-nucleon scattering information. We calculate the trapped levels in... [Phys. Rev. C 85, 034003] Published Wed Mar 14, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Refinement of the n-α and p-α fish-bone potential (2012)

E. Smith, R. Woodhouse, and Z. Papp

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-12-27

Beschreibung: Author(s): E. Smith, R. Woodhouse, and Z. Papp The fish-bone potential of composite particles simulates the Pauli effect by nonlocal terms. We determined the n - α and p - α fish-bone potential by fitting to the experimental phase shifts. We found that with a double Gaussian parametrization of the local potential we can describe the n - α and p - α phas... [Phys. Rev. C 86, 067001] Published Wed Dec 26, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Magnetic form factor of the deuteron in chiral effective field theory (2012)

S. Kölling, E. Epelbaum, and D. R. Phillips

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-10-11

Beschreibung: Author(s): S. Kölling, E. Epelbaum, and D. R. Phillips We calculate the magnetic form factor of the deuteron up to O ( e P 4 ) in the chiral effective field theory expansion of the electromagnetic current operator. The two low-energy constants which enter the two-body part of the isoscalar NN three-current operator are fit to experimental data, and the resul... [Phys. Rev. C 86, 047001] Published Wed Oct 10, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Application of the complex-scaling method to four-nucleon scattering above break-up threshold (2012)

Rimantas Lazauskas

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-10-23

Beschreibung: Author(s): Rimantas Lazauskas A formalism based on the complex-scaling method is developed and applied to solve the four-nucleon scattering problem above the break-up threshold. Converged calculations are presented for the isospin T =0 and T =1 channels in several energy regions above both the three- and the four-particle break-up... [Phys. Rev. C 86, 044002] Published Mon Oct 22, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Formulation of an effective interaction in terms of renormalized vertices and propagators (2013)

Kenji Suzuki, Hiroo Kumagai, Masayuki Matsuzaki, and Ryoji Okamoto

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2013-02-14

Beschreibung: Author(s): Kenji Suzuki, Hiroo Kumagai, Masayuki Matsuzaki, and Ryoji Okamoto One of the useful and practical methods for solving quantum-mechanical many-body systems is to recast the full problem into a form of the effective interaction acting within a model space of tractable size. Many of the effective-interaction theories in nuclear physics have been formulated by use of ... [Phys. Rev. C 87, 024001] Published Wed Feb 13, 2013

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Momentum distributions, spin-dependent observables, and the D_{2} parameter for ^{3}He breakup (2013)

A. P. Kobushkin and E. A. Strokovsky

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2013-02-14

Beschreibung: Author(s): A. P. Kobushkin and E. A. Strokovsky Using a recent parametrization of the fully antisymmetric three-nucleon wave function, based on the Paris and CD-Bonn potentials, we analyze the momentum distributions of constituents in 3 He as well as the spin-dependent observables for ( 3 He, d ) and ( 3 He, p ) breakup reactions. Special attention is pai... [Phys. Rev. C 87, 024002] Published Wed Feb 13, 2013

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Deuteron electrodisintegration with unitarily evolved potentials (2015)

S. N. More, S. König, R. J. Furnstahl, and K. Hebeler

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-12-17

Beschreibung: Author(s): S. N. More, S. König, R. J. Furnstahl, and K. Hebeler Renormalization-group (RG) methods used to soften Hamiltonians for nuclear many-body calculations change the effective resolution of the interaction. For nucleon knockout processes, these RG transformations leave cross sections invariant, but initial-state wave functions, interaction currents, and f… [Phys. Rev. C 92, 064002] Published Mon Dec 14, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Dominant contributions to the nucleon-nucleon interaction at sixth order of chiral perturbation theory (2015)

D. R. Entem, N. Kaiser, R. Machleidt, and Y. Nosyk

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2015-12-09

Beschreibung: Author(s): D. R. Entem, N. Kaiser, R. Machleidt, and Y. Nosyk We present the dominant two- and three-pion-exchange contributions to the nucleon-nucleon interaction at sixth order (next-to-next-to-next-to-next-to-next-to-leading order, N 5 LO ) of chiral perturbation theory. Phase shifts with orbital angular momentum L ≥ 4 are given parameter free at this order and … [Phys. Rev. C 92, 064001] Published Mon Dec 07, 2015

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Separable potential model for meson-baryon interaction beyond the S wave (2012)

Vojtěch Krejčiřík

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-08-24

Beschreibung: Author(s): Vojtěch Krejčiřík A model for low-energy meson-baryon interaction in the strange sector is presented. The interaction is described in terms of separable potentials with multiple partial waves considered. A general solution of the Lippmann-Schwinger equation for the scattering of spin-0 and spin-1/2 particles is deriv... [Phys. Rev. C 86, 024003] Published Thu Aug 23, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Symmetries of the similarity renormalization group for nuclear forces (2012)

V. S. Timóteo, S. Szpigel, and E. Ruiz Arriola

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-09-15

Beschreibung: Author(s): V. S. Timóteo, S. Szpigel, and E. Ruiz Arriola We analyze the role played by long-distance symmetries within the context of the similarity renormalization group (SRG) approach, which is based on phase-shift-preserving continuous unitary transformations that evolve Hamiltonians with a cutoff on energy differences. We find that there is a SRG cuto... [Phys. Rev. C 86, 034002] Published Fri Sep 14, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Generalized Faddeev equations in the Alt-Grassberger-Sandhas form for deuteron stripping with explicit inclusion of target excitations and Coulomb interaction (2012)

A. M. Mukhamedzhanov, V. Eremenko, and A. I. Sattarov

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-09-11

Beschreibung: Author(s): A. M. Mukhamedzhanov, V. Eremenko, and A. I. Sattarov Theoretical description of reactions in general, and the theory for ( d , p ) reactions, in particular, needs to advance into the future. Here deuteron-stripping processes off a target nucleus consisting of A nucleons are treated within the framework of the few-body integral equations theory. The genera... [Phys. Rev. C 86, 034001] Published Mon Sep 10, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Benchmark calculations for elastic fermion-dimer scattering (2012)

Shahin Bour, H.-W. Hammer, Dean Lee, and Ulf-G. Meißner

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-09-15

Beschreibung: Author(s): Shahin Bour, H.-W. Hammer, Dean Lee, and Ulf-G. Meißner We present continuum and lattice calculations for elastic scattering between a fermion and a bound dimer in the shallow binding limit. For the lattice calculation we use the finite-volume method of Lüscher. We take into account topological finite-volume corrections to the dimer binding energy which ... [Phys. Rev. C 86, 034003] Published Fri Sep 14, 2012

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Effective range corrections from effective field theory with dibaryon fields and perturbative pions (2012)

Shung-Ichi Ando and Chang Ho Hyun

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-08-18

Beschreibung: Author(s): Shung-Ichi Ando and Chang Ho Hyun Contributions of perturbative pions around a nontrivial fixed point are studied by utilizing dibaryon fields. We calculate 1 S 0 and 3 S 1 phase shifts for the n p scattering at low energies up to one-pion-exchange contributions. We also calculate effective range parameters, v 2 , v 3 , and v 4 , in the higher... [Phys. Rev. C 86, 024002] Published Fri Aug 17, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Model tests of cluster separability in relativistic quantum mechanics (2012)

B. D. Keister and W. N. Polyzou

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-07-10

Beschreibung: Author(s): B. D. Keister and W. N. Polyzou A relativistically invariant quantum theory first advanced by Bakamjian and Thomas has proven very useful in modeling few-body systems. For three particles or more, this approach is known formally to fail the constraint of cluster separability, whereby symmetries and conservation laws that hold for ... [Phys. Rev. C 86, 014002] Published Mon Jul 09, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Photodisintegration cross section of the reaction ^{4}He(γ,n)^{3}He at the giant dipole resonance peak (2012)

W. Tornow, J. H. Kelley, R. Raut, G. Rusev, A. P. Tonchev, M. W. Ahmed, A. S. Crowell, and S. C. Stave

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-06-02

Beschreibung: Author(s): W. Tornow, J. H. Kelley, R. Raut, G. Rusev, A. P. Tonchev, M. W. Ahmed, A. S. Crowell, and S. C. Stave The photodisintegration cross section of 4 He into a neutron and helion was measured at incident photon energies of 27.0, 27.5, and 28.0 MeV. A high-pressure 4 He-Xe gas scintillator served as target and detector while a pure Xe gas scintillator was used for background measurements. A NaI detector in ... [Phys. Rev. C 85, 061001] Published Fri Jun 01, 2012

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Gauge-invariant formulation of NN→NNγ (2012)

H. Haberzettl and K. Nakayama

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-06-05

Beschreibung: Author(s): H. Haberzettl and K. Nakayama A complete, rigorous relativistic field-theory formulation of the nucleon-nucleon ( NN ) bremsstrahlung reaction is presented. The resulting amplitude is analytic, Lorentz covariant and unitary as a matter of course and it is gauge invariant; i.e., it satisfies a generalized Ward-Takahashi identity. T... [Phys. Rev. C 85, 064001] Published Mon Jun 04, 2012

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Nuclear matter with chiral forces in Brueckner-Hartree-Fock approximation (2012)

Z. H. Li (李增花) and H.-J. Schulze

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-06-06

Beschreibung: Author(s): Z. H. Li (李增花) and H.-J. Schulze We compute the binding energy of symmetric nuclear matter in the Brueckner-Hartree-Fock approach using chiral two-nucleon and three-nucleon forces. We find strong overbinding, which cannot be remedied by the current version of three-body forces. [Phys. Rev. C 85, 064002] Published Tue Jun 05, 2012

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Kristina D. Launey, Tomáš Dytrych, and Jerry P. Draayer

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-04-24

Beschreibung: Author(s): Kristina D. Launey, Tomáš Dytrych, and Jerry P. Draayer The similarity renormalization group (SRG), based on the simple one-body free harmonic oscillator Hamiltonian, is applied to various nucleon-nucleon realistic interactions to investigate the unitarity of the SRG transformations. Two-body and three-body contributions to the SRG-evolved Hamiltonian ar... [Phys. Rev. C 85, 044003] Published Mon Apr 23, 2012

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Pion production in nucleon-nucleon collisions in chiral effective field theory: Next-to-next-to-leading order contributions (2012)

A. A. Filin, V. Baru, E. Epelbaum, H. Krebs, C. Hanhart, A. E. Kudryavtsev, and F. Myhrer

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-05-02

Beschreibung: Author(s): A. A. Filin, V. Baru, E. Epelbaum, H. Krebs, C. Hanhart, A. E. Kudryavtsev, and F. Myhrer A complete calculation of the pion-nucleon loops that contribute to the transition operator for N N → N N π up-to-and-including next-to-next-to-leading order (N 2 LO) in chiral effective field theory near threshold is presented. The evaluation is based on the so-called momentum counting scheme, which takes... [Phys. Rev. C 85, 054001] Published Tue May 01, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Nucleon resonances with hidden charm in coupled-channels models (2012)

Jia-Jun Wu, T.-S. H. Lee, and B. S. Zou

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-04-18

Beschreibung: Author(s): Jia-Jun Wu, T.-S. H. Lee, and B. S. Zou The model dependence of the predictions of nucleon resonances with hidden charm is investigated. We consider several coupled-channel models which are derived from relativistic quantum field theory by using (1) a unitary transformation method and (2) the three-dimensional reductions of the Bethe-Salp... [Phys. Rev. C 85, 044002] Published Tue Apr 17, 2012

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Cross-section measurements of ^{2}H(n,np)n in symmetric star configurations (2012)

A. H. Couture, T. B. Clegg, S. Tajima, C. R. Howell, B. Fallin, J. H. Esterline, A. S. Crowell, B. J. Crowe, D. M. Markoff, L. C. Cumberbatch, R. S. Pedroni, and H. Witała

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-05-17

Beschreibung: Author(s): A. H. Couture, T. B. Clegg, S. Tajima, C. R. Howell, B. Fallin, J. H. Esterline, A. S. Crowell, B. J. Crowe, D. M. Markoff, L. C. Cumberbatch, R. S. Pedroni, and H. Witała Cross-section measurements have been made at 16 and 19 MeV in two exit-channel configurations of neutron-deuteron breakup: the space star and coplanar star. In this kinematically complete measurement, the outgoing proton and one of the neutrons were detected in coincidence and their energies were de... [Phys. Rev. C 85, 054004] Published Wed May 16, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Ab initio study of the photoabsorption of ^{4}He (2012)

W. Horiuchi, Y. Suzuki, and K. Arai

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-05-04

Beschreibung: Author(s): W. Horiuchi, Y. Suzuki, and K. Arai There are some discrepancies in the low-energy data on the photoabsorption cross section of 4 He. We calculate the cross section with realistic nuclear forces and explicitly correlated Gaussian functions. Final-state interactions and two- and three-body decay channels are taken into account. The cros... [Phys. Rev. C 85, 054002] Published Thu May 03, 2012

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Pion photoproduction in a dynamical coupled-channels model (2012)

F. Huang, M. Döring, H. Haberzettl, J. Haidenbauer, C. Hanhart, S. Krewald, U.-G. Meißner, and K. Nakayama

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-05-17

Beschreibung: Author(s): F. Huang, M. Döring, H. Haberzettl, J. Haidenbauer, C. Hanhart, S. Krewald, U.-G. Meißner, and K. Nakayama The charged and neutral pion photoproduction reactions are investigated in a dynamical coupled-channels approach based on the formulation of Haberzettl, Huang, and Nakayama [ Phys. Rev. C 83 065502 (2011) ]. The hadronic final-state interaction is provided by the Jülich π N model, which includes the ... [Phys. Rev. C 85, 054003] Published Wed May 16, 2012

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Triton with long-range chiral N^{3}LO three-nucleon forces (2011)

R. Skibiński, J. Golak, K. Topolnicki, H. Witała, E. Epelbaum, W. Glöckle, H. Krebs, A. Nogga, and H. Kamada

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-16

Beschreibung: Author(s): R. Skibiński, J. Golak, K. Topolnicki, H. Witała, E. Epelbaum, W. Glöckle, H. Krebs, A. Nogga, and H. Kamada [Phys. Rev. C 84, 054005] Published Tue Nov 15, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Two-photon exchange and elastic scattering of longitudinally polarized electrons on polarized deuterons (2011)

Alexander P. Kobushkin, Yaroslav D. Krivenko-Emetov, Stanislav Dubnička, and Anna Z. Dubničkova

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-29

Beschreibung: Author(s): Alexander P. Kobushkin, Yaroslav D. Krivenko-Emetov, Stanislav Dubnička, and Anna Z. Dubničkova [Phys. Rev. C 84, 054007] Published Mon Nov 28, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Two-nucleon electromagnetic current in chiral effective field theory: One-pion exchange and short-range contributions (2011)

S. Kölling, E. Epelbaum, H. Krebs, and U.-G. Meißner

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-29

Beschreibung: Author(s): S. Kölling, E. Epelbaum, H. Krebs, and U.-G. Meißner [Phys. Rev. C 84, 054008] Published Mon Nov 28, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Dynamical coupled-channels study of K^{*}K^{*}[over ¯] and ωφ states in a chiral quark model (2011)

W. L. Wang and Z. Y. Zhang

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-22

Beschreibung: Author(s): W. L. Wang and Z. Y. Zhang [Phys. Rev. C 84, 054006] Published Mon Nov 21, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Nucleon-nucleon interactions from dispersion relations: Elastic partial waves (2011)

M. Albaladejo and J. A. Oller

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-29

Beschreibung: Author(s): M. Albaladejo and J. A. Oller [Phys. Rev. C 84, 054009] Published Mon Nov 28, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Antiproton scattering off ^{3}He and ^{4}He nuclei at low and intermediate energies (2011)

Yu. N. Uzikov, J. Haidenbauer, and B. A. Prmantayeva

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-29

Beschreibung: Author(s): Yu. N. Uzikov, J. Haidenbauer, and B. A. Prmantayeva [Phys. Rev. C 84, 054011] Published Mon Nov 28, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Benchmark calculation of n-^{3}H and p-^{3}He scattering (2011)

M. Viviani, A. Deltuva, R. Lazauskas, J. Carbonell, A. C. Fonseca, A. Kievsky, L.E. Marcucci, and S. Rosati

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-29

Beschreibung: Author(s): M. Viviani, A. Deltuva, R. Lazauskas, J. Carbonell, A. C. Fonseca, A. Kievsky, L.E. Marcucci, and S. Rosati [Phys. Rev. C 84, 054010] Published Mon Nov 28, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Renormalizing chiral nuclear forces: A case study of ^{3}P_{0} (2011)

Bingwei Long and C.-J. Yang

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-29

Beschreibung: Author(s): Bingwei Long and C.-J. Yang [Phys. Rev. C 84, 057001] Published Mon Nov 28, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Momentum-space evolution of chiral three-nucleon forces (2012)

K. Hebeler

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-02-29

Beschreibung: Author(s): K. Hebeler A framework to evolve three-nucleon ( 3N ) forces in a plane-wave basis with the similarity renormalization group (SRG) is presented and applied to consistent interactions derived from chiral effective field theory at next-to-next-to-leading order. We demonstrate the unitarity of the SRG transformatio... [Phys. Rev. C 85, 021002] Published Tue Feb 28, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Isospin and temperature dependence of the rearrangement term in Brueckner theory (2012)

Z. H. Li and W. Zuo

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-03-06

Beschreibung: Author(s): Z. H. Li and W. Zuo In the framework of Brueckner theory, the mass operator is evaluated up to second order in the hole-line expansion and the single-particle potentials of neutrons and protons are determined in asymmetric nuclear matter for different temperatures and densities. We find an almost linear dependence of t... [Phys. Rev. C 85, 037001] Published Mon Mar 05, 2012

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One- versus two-pole K[over ¯]N-πΣ potential: K^{−}d scattering length (2012)

N. V. Shevchenko

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-03-07

Beschreibung: Author(s): N. V. Shevchenko We investigated the dependence of the K − d scattering length on models of the K ̅ N interaction with one or two poles for the Λ (1405) resonance. The K ̅ N N - π Σ N system is described by coupled-channel Faddeev equations in Alt-Grassberger-Sandhas form. Our new two-body K ̅ N - π Σ potenti... [Phys. Rev. C 85, 034001] Published Tue Mar 06, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Charge independence, charge symmetry breaking in the S-wave nucleon-nucleon interaction, and renormalization (2012)

A. Calle Cordón, M. Pavón Valderrama, and E. Ruiz Arriola

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-02-23

Beschreibung: Author(s): A. Calle Cordón, M. Pavón Valderrama, and E. Ruiz Arriola We explore the interplay between renormalization, charge independence and charge symmetry breaking (CIB and CSB) in S -wave nucleon-nucleon scattering. The renormalizability requirement generates universality functions , that is, correlations between the low-energy scattering observables in the neutro... [Phys. Rev. C 85, 024002] Published Wed Feb 22, 2012

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Comparative study of three-nucleon potentials in nuclear matter (2012)

Alessandro Lovato, Omar Benhar, Stefano Fantoni, and Kevin E. Schmidt

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2012-02-23

Beschreibung: Author(s): Alessandro Lovato, Omar Benhar, Stefano Fantoni, and Kevin E. Schmidt A new generation of local three-body potentials providing an excellent description of the properties of light nuclei, as well as of the neutron-deuteron doublet scattering length, has been recently derived. We have performed a comparative analysis of the equations of state of both pure neutron matte... [Phys. Rev. C 85, 024003] Published Wed Feb 22, 2012

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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W. Li, E. R. Anderson, and R. J. Furnstahl

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-05

Beschreibung: Author(s): W. Li, E. R. Anderson, and R. J. Furnstahl [Phys. Rev. C 84, 054002] Published Fri Nov 04, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

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Reexamination of the α-α “fishbone” potential (2011)

J. P. Day, J. E. McEwen, M. Elhanafy, E. Smith, R. Woodhouse, and Z. Papp

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-09-07

Beschreibung: Author(s): J. P. Day, J. E. McEwen, M. Elhanafy, E. Smith, R. Woodhouse, and Z. Papp The fishbone potential of composite particles simulates the Pauli effect by nonlocal terms. We determine the α - α fishbone potential by simultaneously fitting to two- α resonance energies, experimental phase shifts, and three- α binding energies. We found that, essentially, a simple Gaussian can provid... [Phys. Rev. C 84, 034001] Published Tue Sep 06, 2011

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Photon scattering with the Lorentz integral transform method (2011)

Giulia Bampa, Winfried Leidemann, and Hartmuth Arenhövel

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-09-20

Beschreibung: Author(s): Giulia Bampa, Winfried Leidemann, and Hartmuth Arenhövel The application of the Lorentz integral transform (LIT) method to photon scattering off nuclei is presented in general. As an example, elastic photon scattering off the deuteron in the unretarded dipole approximation is considered using the LIT method. The inversion of the integral transform is disc... [Phys. Rev. C 84, 034005] Published Mon Sep 19, 2011

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Proton-proton bremsstrahlung: Consequences of different on-shell-point conditions (2011)

Yi Li, M. K. Liou, W. M. Schreiber, and B. F. Gibson

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-09-20

Beschreibung: Author(s): Yi Li, M. K. Liou, W. M. Schreiber, and B. F. Gibson Background : Proton-proton bremsstrahlung ( p p γ ) is investigated both theoretically and experimentally. The p p γ amplitudes can be classified according to the number and location of on-shell points at which they are evaluated. Quantitative understanding of the effect on the p p γ cross section of using d... [Phys. Rev. C 84, 034007] Published Mon Sep 19, 2011

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Search for long-range force between a neutron and an atom with a trap of ultracold neutrons (2011)

A. P. Serebrov, O. M. Zherebtsov, S. V. Sbitnev, V. E. Varlamov, A. V. Vassiljev, and M. S. Lasakov

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-10-18

Beschreibung: Author(s): A. P. Serebrov, O. M. Zherebtsov, S. V. Sbitnev, V. E. Varlamov, A. V. Vassiljev, and M. S. Lasakov [Phys. Rev. C 84, 044001] Published Mon Oct 17, 2011

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Validity of the coupled-channel reduction in three-body scattering (2011)

O. A. Rubtsova, V. I. Kukulin, and V. N. Pomerantsev

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-10-25

Beschreibung: Author(s): O. A. Rubtsova, V. I. Kukulin, and V. N. Pomerantsev [Phys. Rev. C 84, 044002] Published Mon Oct 24, 2011

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Subleading contributions to the chiral three-nucleon force. II. Short-range terms and relativistic corrections (2011)

V. Bernard, E. Epelbaum, H. Krebs, and Ulf-G. Meißner

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-11-02

Beschreibung: Author(s): V. Bernard, E. Epelbaum, H. Krebs, and Ulf-G. Meißner [Phys. Rev. C 84, 054001] Published Tue Nov 01, 2011

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Pions are neither perturbative nor nonperturbative: Wilsonian renormalization-group analysis of nuclear effective field theory including pions (2011)

Koji Harada, Hirofumi Kubo, and Yuki Yamamoto

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-03-09

Beschreibung: Author(s): Koji Harada, Hirofumi Kubo, and Yuki Yamamoto Nuclear effective field theory (NEFT) including pions in the two-nucleon sector is examined from the Wilsonian renormalization group point of view. The pion exchange is cut off at the floating cutoff scale, Λ, with the short-distance part being represented as contact interactions in accordance with... [Phys. Rev. C 83, 034002] Published Tue Mar 08, 2011

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Publiziert von American Physical Society (APS)

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Cross sections for the three-body photodisintegration of ^{3} He at E_{γ} =12.8, 13.5, and 14.7 MeV (2011)

B. A. Perdue, M. W. Ahmed, S. S. Henshaw, P.-N. Seo, S. Stave, H. R. Weller, P. P. Martel, and A. Teymurazyan

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-03-11

Beschreibung: Author(s): B. A. Perdue, M. W. Ahmed, S. S. Henshaw, P.-N. Seo, S. Stave, H. R. Weller, P. P. Martel, and A. Teymurazyan The absolute differential cross sections for the ^{3} He(γ,n)pp reaction were measured as a function of outgoing neutron scattering angle and energy at the incident γ-ray energies of 12.8, 13.5, and 14.7 MeV to within a precision better than ±6%. Both the absolute cross sections and the neutron e... [Phys. Rev. C 83, 034003] Published Thu Mar 10, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

Print ISSN: 0556-2813

Digitale ISSN: 1089-490X

Thema: Physik

Publiziert von American Physical Society (APS)

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Effective short-range interaction for spin-singlet P-wave nucleon-nucleon scattering (2011)

Katie L. Ipson, Katharina Helmke, and Michael C. Birse

American Physical Society (APS)

In: Physical Review C

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Publikationsdatum: 2011-01-25

Beschreibung: Author(s): Katie L. Ipson, Katharina Helmke, and Michael C. Birse Distorted-wave methods are used to remove the effects of one- and two-pion exchange up to order Q^{3} from the empirical ^{1} P_{1} phase shift. The one divergence that arises can be renormalized using an order-Q^{2} counterterm which is provided by the (Weinberg) power counting appropriate to the e... [Phys. Rev. C 83, 017001] Published Mon Jan 24, 2011

Schlagwort(e): Nucleon-Nucleon Interaction, Few-Body Systems

Print ISSN: 0556-2813

Digitale ISSN: 1089-490X

Thema: Physik

Publiziert von American Physical Society (APS)

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