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题名: A comprehensive analysis of hadronic b -> s transitions in a family non-universal Z ' model
作者: Chang, Q ;  Li, XQ ;  Yang, YD
刊名: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
出版日期: 2014
卷号: 41, 期号:10, 页码:105002
关键词: CHANGING NEUTRAL CURRENTS ;  QCD FACTORIZATION ;  LAMBDA-L(+)L(-) DECAY ;  LEADING LOGARITHMS ;  CP-VIOLATION ;  CONSTRAINTS ;  POLARIZATION ;  DIFFERENCE ;  PHI-PI(0) ;  LAMBDA(B)
学科分类: Physics
DOI: 10.1088/0954-3899/41/10/105002
通讯作者: Chang, Q (reprint author), Henan Normal Univ, Inst Particle & Nucl Phys, Xinxiang 453007, Henan, Peoples R China.
部门归属: [Chang, Qin] Henan Normal Univ, Inst Particle & Nucl Phys, Xinxiang 453007, Henan, Peoples R China ;  [Chang, Qin ;  Li, Xin-Qiang ;  Yang, Ya-Dong] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China ;  [Chang, Qin ;  Li, Xin-Qiang ;  Yang, Ya-Dong] Cent China Normal Univ, Key Lab Quark & Lepton Phys, MOE, Wuhan 430079, Hubei, Peoples R China ;  [Li, Xin-Qiang] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Motivated by the latest improved measurements of B-meson decays, we make a comprehensive analysis of the impact of a family non-universal Z' boson on B-s - (B) over bar (s) mixing and two-body hadronic B-meson decays, all being characterized by the quark-level b -> s transition. Explicitly 22 decay modes and the related 52 observables are considered, and some interesting correlations between them are also carefully examined. Firstly, the allowed oases of b - s - Z' coupling parameters |B-sb(L, R)| and phi(L, R)(s) are extracted from B-s - (B) over bar (s) mixing. Then, in the 'SM limit' (i.e., no new types of Z'-induced four-quark operators arise compared to the SM case), we study the Z' effects on B -> pi K, pi K* and rho K decays. It is found that a new weak phase phi(L)(s) similar to - 90 degrees is crucial for resolving the observed 'pi K CP puzzle' and the allowed cases of the other Z' coupling parameters are also strongly restricted. Moreover, the Z' effects on (B) over bar (s) -> KK, KK* and pi(0)phi decays, being induced by the same quark-level b -> sq (q) over bar (q = u, d) transitions, are also investigated. In particular, it is found that the decay (B) over bar (s) -> pi(0)phi, once measured, would play a key role in revealing the observed 'pi K CP puzzle' and probing possible new physics hints. Finally, to check the non-universality of Z' couplings to light-quark pairs, we have studied the B -> phi K decays in detail and found that the left-handed s - s - Z' coupling is different from the d - d - Z' one, which is due to the large A(CP)(dir)(B- -> phi K-) reported by the BaBar Collaboration.
资助者: National Natural Science Foundation of China (NSFC) [11105043, 11005032, 11225523, 11224504]; Research Fund for the Doctoral Program of Higher Education of China [20114104120002, 20104104120001]; Foundation for the Author of National Excellent Doctoral Dissertation of People's Republic of China [201317]; Program for Science and Technology Innovation Talents in Universities of Henan Province [14HASTIT036]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000342356500003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/15646
Appears in Collections:理论物理所2014年知识产出 _期刊论文

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Recommended Citation:
Chang, Q,Li, XQ,Yang, YD. A comprehensive analysis of hadronic b -> s transitions in a family non-universal Z ' model[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2014,41(10):105002.
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