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Branching ratio and CP Asymmetry of B ->rho eta((')) decays in the perturbative QCD approach
Liu, X; Wang, HS; Xiao, ZJ; Guo, LB; Lu, CD; Lv CD(吕才典)
2006
发表期刊PHYSICAL REVIEW D
卷号73期号:7页码:74002
通讯作者Nanjing Normal Univ, Dept Phys, Nanjing 210097, Jiangsu, Peoples R China ; Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210097, Jiangsu, Peoples R China ; Chinese Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China ; CAS, Inst High Energy Phys, Beijing 100049, Peoples R China
摘要In this paper, we calculate the branching ratios and CP-violating asymmetries for B-0->rho(0)eta((')) and B+->rho(+)eta((')) decays in the perturbative QCD factorization approach. In this approach, we not only calculate the usual factorizable contributions, but also evaluate the nonfactorizable and annihilation type contributions. Besides the current-current operators, the contributions from the QCD and electroweak penguin operators are also taken into account. The theoretical predictions for the branching ratios are Br(B+->rho(+)eta((')))approximate to 9x10(-6) and Br(B-0->rho(0)eta((')))approximate to 5x10(-8), which agree well with the measured values and currently available experimental upper limits. We also predict large CP-violating asymmetries in these decays: A(CP)(dir)(rho(+/-)eta)approximate to-13%, A(CP)(dir)(rho(+/-)eta('))approximate to-18%, A(CP)(dir)(rho(0)eta)approximate to-41%, A(CP)(dir)(rho(0)eta('))approximate to-27%, A(CP)(mix)(rho(0)eta)approximate to+25%, and A(CP)(mix)(rho(0)eta('))approximate to+11%, which can be tested by the current or future B factory experiments.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.73.074002
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语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000237158500025
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被引频次:36[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240768
专题理论物理室
作者单位中国科学院高能物理研究所
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Liu, X,Wang, HS,Xiao, ZJ,et al. Branching ratio and CP Asymmetry of B ->rho eta((')) decays in the perturbative QCD approach[J]. PHYSICAL REVIEW D,2006,73(7):74002.
APA Liu, X,Wang, HS,Xiao, ZJ,Guo, LB,Lu, CD,&吕才典.(2006).Branching ratio and CP Asymmetry of B ->rho eta((')) decays in the perturbative QCD approach.PHYSICAL REVIEW D,73(7),74002.
MLA Liu, X,et al."Branching ratio and CP Asymmetry of B ->rho eta((')) decays in the perturbative QCD approach".PHYSICAL REVIEW D 73.7(2006):74002.
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