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Invisible K_{L} decays as a probe of new physics (2015)

S. N. Gninenko and N. V. Krasnikov

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-11

Beschreibung: Author(s): S. N. Gninenko and N. V. Krasnikov The decay K L → invisible has never been experimentally tested. In the Standard Model (SM), its branching ratio for the decay into two neutrinos is helicity suppressed and predicted to be Br ( K L → ν ν ¯ ) ≲ 10 − 10 . We consider several natural extensions of the SM, such as two-Higgs-doublet (2HDM), 2HDM and ligh… [Phys. Rev. D 92, 034009] Published Mon Aug 10, 2015

Schlagwort(e): Strong Interactions

Print ISSN: 0556-2821

Digitale ISSN: 1089-4918

Thema: Physik

Publiziert von American Physical Society (APS)

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B [over ¯] ^{0} decay into D^{0} and f_{0} (500), f_{0} (980), a_{0} (980), ρ and B [over ¯] _{s}^{0} decay into D^{0} and κ(800), K^{*0} (2015)

Wei-Hong Liang, Ju-Jun Xie, and E. Oset

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-12

Beschreibung: Author(s): Wei-Hong Liang, Ju-Jun Xie, and E. Oset We make predictions for ratios of branching fractions of B ¯ 0 decays into D 0 and the scalar mesons f 0 ( 500 ) , f 0 ( 980 ) , a 0 ( 980 ) , plus B ¯ s 0 decay into D 0 and κ ( 800 ) . We also compare the π + π − production in the scalar channel with that observed in the ρ channel and make predictions for the B ¯ s 0 decay into … [Phys. Rev. D 92, 034008] Published Mon Aug 10, 2015

Schlagwort(e): Strong Interactions

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Thema: Physik

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Diffractive electromagnetic processes from a Regge point of view (2015)

H. G. Dosch and E. Ferreira

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-04

Beschreibung: Author(s): H. G. Dosch and E. Ferreira The energy dependence of the cross sections for electromagnetic diffractive processes can be well described by a single power, W δ . For J / ψ photoproduction this holds in the range from 20 GeV to 2 TeV. This feature is most easily explained by a single pole in the angular momentum plane which depends … [Phys. Rev. D 92, 034002] Published Mon Aug 03, 2015

Schlagwort(e): Strong Interactions

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Thema: Physik

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Combined study of 2S and 1D open-charm mesons with natural spin-parity (2015)

Bing Chen, Xiang Liu, and Ailin Zhang

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-06

Beschreibung: Author(s): Bing Chen, Xiang Liu, and Ailin Zhang In this paper, we perform a combined study of 2 S and 1 D open-charm mesons with natural spin-parity. Our results indicate that D 1 * ( 2600 ) / D s 1 * ( 2700 ) and D 1 * ( 2760 ) / D s 1 * ( 2860 ) are predominantly the 2 S 1 3 and 1 D 1 3 charmed/charmed-strange mesons, respectively, while D 3 * ( 2760 ) / D s 3 * ( 2860 ) can be regarded as … [Phys. Rev. D 92, 034005] Published Wed Aug 05, 2015

Schlagwort(e): Strong Interactions

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Thema: Physik

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New structures in the proton-antiproton system (2015)

I. T. Lorenz, H.-W. Hammer, and Ulf-G. Meißner

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): I. T. Lorenz, H.-W. Hammer, and Ulf-G. Meißner In the most recent measurements of the reaction e + e − → p p ¯ by the BABAR collaboration, new structures have been found with unknown origin. We examine a possible relation of the most distinct peak to the recently observed ϕ ( 2170 ) . Alternatively, we analyze possible explanations due to the nucleon Δ ¯ an… [Phys. Rev. D 92, 034018] Published Tue Aug 18, 2015

Schlagwort(e): Strong Interactions

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Pseudoscalar mesons with symmetric bound state vertex functions on the light front (2015)

George H. S. Yabusaki, Ishtiaq Ahmed, M. Ali Paracha, J. P. B. C. de Melo, and Bruno El-Bennich

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-19

Beschreibung: Author(s): George H. S. Yabusaki, Ishtiaq Ahmed, M. Ali Paracha, J. P. B. C. de Melo, and Bruno El-Bennich We study the electromagnetic form factors, decay constants and charge radii of the pion and kaon within the framework of light-front field theory formalism where we use an ansatz for the quark-meson interaction bound-state function which is symmetric under exchange of quark and antiquark momentum. T… [Phys. Rev. D 92, 034017] Published Tue Aug 18, 2015

Schlagwort(e): Strong Interactions

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Hadronic loops versus factorization in effective field theory calculations of X(3872)→χ_{cJ} π^{0} (2015)

Thomas Mehen

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-21

Beschreibung: Author(s): Thomas Mehen We compare two existing approaches to calculating the decay of molecular quarkonium states to conventional quarkonia in effective field theory, using X ( 3872 ) → χ c J π 0 as an example. In one approach the decay of the molecular quarkonium proceeds through a triangle diagram with charmed mesons in the loop… [Phys. Rev. D 92, 034019] Published Thu Aug 20, 2015

Schlagwort(e): Strong Interactions

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Refined analysis on the X(3872) resonance (2015)

Ce Meng, Juan José Sanz-Cillero, Meng Shi, De-Liang Yao, and Han-Qing Zheng

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-22

Beschreibung: Author(s): Ce Meng, Juan José Sanz-Cillero, Meng Shi, De-Liang Yao, and Han-Qing Zheng We study the property of the X ( 3872 ) meson by analyzing the B → K D D ¯ * and B → K J / ψ π + π − decay processes. The competition between the rescattering mediated through a Breit-Wigner resonance and the rescattering generated from a local D D ¯ * → D D ¯ * interaction is carefully studied through an effective Lagrangia… [Phys. Rev. D 92, 034020] Published Fri Aug 21, 2015

Schlagwort(e): Strong Interactions

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Search for intrinsic charm in vector boson production accompanied by heavy-flavor jets (2015)

P.-H. Beauchemin, V. A. Bednyakov, G. I. Lykasov, and Yu. Yu. Stepanenko

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-15

Beschreibung: Author(s): P.-H. Beauchemin, V. A. Bednyakov, G. I. Lykasov, and Yu. Yu. Stepanenko Assuming the possible existence of an intrinsic (or valencelike) heavy quark component in the proton distribution functions, we analyze the vector boson Z / W production, accompanied by heavy-flavor jets, in p p collisions at the LHC energies. We present theoretical predictions for differential cross s… [Phys. Rev. D 92, 034014] Published Fri Aug 14, 2015

Schlagwort(e): Strong Interactions

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Renormalization of quasiparton distribution (2015)

Xiangdong Ji and Jian-Hui Zhang

American Physical Society (APS)

In: Physical Review D

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Publikationsdatum: 2015-08-08

Beschreibung: Author(s): Xiangdong Ji and Jian-Hui Zhang Recent developments showed that light-cone parton distributions can be studied by investigating the large momentum limit of the hadronic matrix elements of spacelike correlators, which are known as quasiparton distributions. Like a light-cone parton distribution, a quasiparton distribution also cont… [Phys. Rev. D 92, 034006] Published Fri Aug 07, 2015

Schlagwort(e): Strong Interactions

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