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Isgur-Wise functions and unitary representations of the Lorentz group: The meson case with j=1/2 light cloud (2014)

A. Le Yaouanc, L. Oliver, and J.-C. Raynal

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-12-12

Description: Author(s): A. Le Yaouanc, L. Oliver, and J.-C. Raynal We pursue the group-theoretical method to study Isgur-Wise (IW) functions. We extend the general formalism, formerly applied to the baryon case j P =0 + (for Λ b →Λ c ℓν̅ ℓ ), to mesons with j P =1/2 - , i.e. B̅ →D(D (*) )ℓν. In this case, which is more involved from the angular momentum point of vi... [Phys. Rev. D 90, 114016] Published Thu Dec 11, 2014

Keywords: Strong Interactions

Print ISSN: 0556-2821

Electronic ISSN: 1089-4918

Topics: Physics

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Angular analysis of polarized top quark decay into B mesons in two different helicity systems (2014)

S. Mohammad Moosavi Nejad and Mahboobe Balali

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-12-13

Description: Author(s): S. Mohammad Moosavi Nejad and Mahboobe Balali We calculate the O (α s ) radiative corrections to the spin-dependent differential decay rates of the process t→b+W + . These are needed to study the angular distribution of the energy of hadrons produced in polarized top quark decays at next-to-leading order. In our previous work, we studied the angular... [Phys. Rev. D 90, 114017] Published Fri Dec 12, 2014

Keywords: Strong Interactions

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Electronic ISSN: 1089-4918

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Role of the hadron molecule Λc(2940) in the pp¯→pD0Λ¯c(2286) annihilation reaction (2014)

Yubing Dong, Amand Faessler, Thomas Gutsche, and Valery E. Lyubovitskij

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-11-04

Description: Author(s): Yubing Dong, Amand Faessler, Thomas Gutsche, and Valery E. Lyubovitskij The annihilation process pp¯→pD0Λ¯c(2286) is studied taking into account t-channel D0, D*0 meson exchange and the resonance contribution of Λc(2286) and Λc(2940) baryons. We assume that the Λc(2940) baryon is a pD*0 molecular state with spin-parity 12+ and 12-. Our results show that near the thresho... [Phys. Rev. D 90, 094001] Published Mon Nov 03, 2014

Keywords: Strong Interactions

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Charmed scalar meson production in B decays (2014)

Yue-Long Shen, Zhong-Juan Yang, and Xin Yu

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-12-12

Description: Author(s): Yue-Long Shen, Zhong-Juan Yang, and Xin Yu Charmed scalar meson spectroscopy has become a hot topic on both experimental and theoretical sides. The B (s) decays provide an ideal place to study their properties. We employ the B-meson light-cone sum rules to calculate the B̅ s 0 →D s0 *+ (2317) and B - →D 0 *0 (2400) transition form factors at the... [Phys. Rev. D 90, 114015] Published Thu Dec 11, 2014

Keywords: Strong Interactions

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Electroweak production of top-quark pairs in e^{+}e^{-} annihilation at NNLO in QCD: The vector current contributions (2014)

Jun Gao and Hua Xing Zhu

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-12-18

Description: Author(s): Jun Gao and Hua Xing Zhu We report on a calculation of the vector current contributions to the electroweak production of top quark pairs in e + e - annihilation at next-to-next-to-leading order in quantum chromodynamics. Our setup is fully differential and can be used to calculate any infrared-safe observable. The real emissio... [Phys. Rev. D 90, 114022] Published Wed Dec 17, 2014

Keywords: Strong Interactions

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Pion scalar form factor and another confirmation of the existence of the f_{0}(500) meson (2014)

S. Dubnička, A. Z. Dubničková, and A. Liptaj

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-12-02

Description: Author(s): S. Dubnička, A. Z. Dubničková, and A. Liptaj An explicit form of the pion scalar form factor Γ π (t) is constructed by using its phase representation and a correct description of the S-wave isoscalar ππ phase shift δ 0 0 (t) data by the parametrization of tanδ 0 0 (t) in the absolute valued pion c.m. three-momentum q=[(t-4m π 2 )/4] 1/2 . This parametrizat... [Phys. Rev. D 90, 114003] Published Mon Dec 01, 2014

Keywords: Strong Interactions

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Is f_{0}(1710) a glueball? (2014)

Stanislaus Janowski, Francesco Giacosa, and Dirk H. Rischke

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-12-03

Description: Author(s): Stanislaus Janowski, Francesco Giacosa, and Dirk H. Rischke We study the three-flavor chirally and dilatation invariant extended linear sigma model with (pseudo)scalar and (axial-)vector mesons as well as a scalar dilaton field whose excitations are interpreted as a glueball. The model successfully describes masses and decay widths of quark-antiquark mesons ... [Phys. Rev. D 90, 114005] Published Tue Dec 02, 2014

Keywords: Strong Interactions

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Electric conductivity from the solution of the relativistic Boltzmann equation (2014)

A. Puglisi, S. Plumari, and V. Greco

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-12-04

Description: Author(s): A. Puglisi, S. Plumari, and V. Greco We present numerical results of electric conductivity σ el of a fluid obtained solving the relativistic transport Boltzmann equation in a box with periodic boundary conditions. We compute σ el using two methods: the definition itself, i.e., applying an external electric field, and the evaluation of th... [Phys. Rev. D 90, 114009] Published Wed Dec 03, 2014

Keywords: Strong Interactions

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Strong Λ_{b}NB and Λ_{c}ND vertices (2014)

K. Azizi, Y. Sarac, and H. Sundu

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-12-05

Description: Author(s): K. Azizi, Y. Sarac, and H. Sundu We investigate the strong vertices among the Λ b , nucleon, and B meson as well as the Λ c , nucleon, and D meson in QCD. In particular, we calculate the strong coupling constants g Λ b NB and g Λ c ND for different Dirac structures entering the calculations. In the case of the Λ c ND vertex, we compare the res... [Phys. Rev. D 90, 114011] Published Thu Dec 04, 2014

Keywords: Strong Interactions

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Isospin violation in the yield of S-wave heavy meson pairs near threshold (2014)

Xin Li and M. B. Voloshin

American Physical Society (APS)

In: Physical Review D

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Publication Date: 2014-01-14

Description: Author(s): Xin Li and M. B. Voloshin We consider the production of overall neutral pairs consisting of heavy D(*) or B(*) mesons and antimesons in processes where such pairs can be created in an S wave, such as e+e−→π0D*D¯(*), e+e−→γD(*)D¯(*), and similar reactions with B(*) mesons. The ratio Rc/n of the yield of pairs of charged meson... [Phys. Rev. D 89, 014013] Published Mon Jan 13, 2014

Keywords: Strong Interactions

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