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Measurement of the CP-violating phase phi(s) and the B-s(0) meson decay width difference with B-s(0) -> J/psi phi decays in ATLAS
ATLAS Collaboration
2016
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
卷号2016期号:8页码:147
文章类型Article
摘要A measurement of the B-s(0) decay parameters in the B-s(0) -> J/psi/phi channel using an integrated luminosity of 14.3 fb(-1) collected by the ATLAS detector from 8TeV pp collisions at the LHC is presented. The measured parameters include the CP-violating phase phi(s), the decay width Gamma(s) and the width di ff erence between the mass eigenstates Delta Gamma(s). The values measured for the physical parameters are statistically combined with those from 4.9 fb-1 of 7TeV data, leading to the following: phi(s) = -0.090 +/- 0.078 (stat.) +/- 0.041 (syst.) rad Delta Gamma s = 0.085 +/- 0.011 (stat.) +/- 0.007 (syst.) ps(-1) Gamma(s) = 0.675 +/- 0.003 (stat.) +/- 0.003 (syst:) ps(-1). In the analysis the parameter Delta Gamma(s) is constrained to be positive. Results for phi(s) and Delta Gamma(s) are also presented as 68% and 95% likelihood contours in the phi(s)-Delta Gamma(s) plane. Also measured in this decay channel are the transversity amplitudes and corresponding strong phases. All measurements are in agreement with the Standard Model predictions.
关键词B physics CP violation Flavor physics Hadron-Hadron scattering (experiments)
DOI10.1007/jhep08(2016)147
语种英语
WOS记录号WOS:000391784400001
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260937
专题实验物理中心
作者单位中国科学院高能物理研究所
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ATLAS Collaboration. Measurement of the CP-violating phase phi(s) and the B-s(0) meson decay width difference with B-s(0) -> J/psi phi decays in ATLAS[J]. JOURNAL OF HIGH ENERGY PHYSICS,2016,2016(8):147.
APA ATLAS Collaboration.(2016).Measurement of the CP-violating phase phi(s) and the B-s(0) meson decay width difference with B-s(0) -> J/psi phi decays in ATLAS.JOURNAL OF HIGH ENERGY PHYSICS,2016(8),147.
MLA ATLAS Collaboration."Measurement of the CP-violating phase phi(s) and the B-s(0) meson decay width difference with B-s(0) -> J/psi phi decays in ATLAS".JOURNAL OF HIGH ENERGY PHYSICS 2016.8(2016):147.
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