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Pure annihilation type B-c -> M2M3 decays in the perturbative QCD approach
Liu, X; Xiao, ZJ; Lv CD(吕才典); Lu, CD
2010
发表期刊PHYSICAL REVIEW D
卷号81期号:1页码:14022
通讯作者[Liu, Xin ; Xiao, Zhen-Jun ; Lue, Cai-Dian] Nanjing Normal Univ, Dept Phys, Nanjing 210046, Jiangsu, Peoples R China ; [Liu, Xin ; Xiao, Zhen-Jun ; Lue, Cai-Dian] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210046, Jiangsu, Peoples R China ; [Lue, Cai-Dian] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Lue, Cai-Dian] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
文章类型Article
摘要In the standard model the two-body charmless hadronic B-c meson decays can occur via annihilation diagrams only. In this work, we studied the B-c -> PP, PV/VP, VV decays by employing the perturbative QCD (pQCD) factorization approach. From our calculations, we find that (a) the pQCD predictions for the branching ratios of the considered B-c decays are in the range of 10(-6) to 10(-8); (b) for B-c -> PV/VP, VV decays, the branching ratios of Delta S = 0 decays are much larger than those of Delta S = 1 because the different Cabibbo-Kobayashi-Maskawa (CKM) factors are involved; (c) analogous to B -> K eta((t)) decays, we find Br(B-c -> K+eta') similar to 10 X Br(B-c -> K+eta), which can be understood by the destructive and constructive interference between the eta(q) and eta(s) contribution to the B-c -> K+eta and B-c -> K+eta' decay; (d) the longitudinal polarization fractions of B-c -> VV decays are in the range of 86%-95% and play the dominant role; and (e) there is no CP-violating asymmetries for the considered B-c decays because only one type tree operator is involved.
学科领域Astronomy & Astrophysics; Physics
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
DOI10.1103/PhysRevD.81.014022
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语种英语
研究领域[WOS]Astronomy & Astrophysics ; Physics ; Astronomy & Astrophysics ; Physics
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000274002800033
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被引频次:38[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/311005/240437
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,Xiao, ZJ,Lv CD,et al. Pure annihilation type B-c -> M2M3 decays in the perturbative QCD approach[J]. PHYSICAL REVIEW D,2010,81(1):14022.
APA Liu, X,Xiao, ZJ,吕才典,&Lu, CD.(2010).Pure annihilation type B-c -> M2M3 decays in the perturbative QCD approach.PHYSICAL REVIEW D,81(1),14022.
MLA Liu, X,et al."Pure annihilation type B-c -> M2M3 decays in the perturbative QCD approach".PHYSICAL REVIEW D 81.1(2010):14022.
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