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Semi-inclusive B -> K(K*)X decays with initial bound state effects
He, XG; Jin, CH; Ma, JP; He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.
2001
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号64期号:1页码:-
摘要The effects of the initial b quark bound state for the semi-inclusive decays B --> K(K*)X are studied using light cone expansion and heavy quark effective theory methods. We find that the initial bound state effects on the branching ratios and CP asymmetries are small. In the light cone expansion approach, the CP-averaged branching ratios are increased by about 2% with respect to the free b-quark decay. For (B) over bar (o)-->-K-(K*(-))X. the CP-averaged branching ratios are sensitive to the phase gamma and the CP asymmetry can be as large as 7% (14%), whereas for B--->(K) over bar *o((K) over bar*(o))X the CP-averaged branching ratios are not sensitive to gamma and the CP asymmetries are small (<1%). The CP-averaged branching ratios are predicted to be in the ranges (0.53-1.5) x 10(-4) [(0.25-2.0) x 10(-4)] for <(B)over bar>(o)-->K-(K*(-))X and (0.77-0.84)X 10(-4) [(0.67-0.74) x 10(-4)] for B--->(K)over bar>(o)((K) over bar*(o))X, depending on the value of the CP violating phase gamma. In the heavy quark effective theory approach, we find that the branching ratios are decreased by about 10% and the CP asymmetries are not affected. These predictions can be tested in the near future.
部门归属Natl Taiwan Univ, Dept Phys, Taipei, Taiwan; Univ Melbourne, Sch Phys, Melbourne, Vic, Australia; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Improved Factorization Approach Direct Cp Violation B-meson Decays Qcd Factorization Heavy-quark Electroweak Penguins V-ub Spectrum Physics Phases
学科领域Physics
收录类别SCI
WOS记录号WOS:000169619300043
引用统计
被引频次:8[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12714
专题理论物理所SCI论文
通讯作者He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.
推荐引用方式
GB/T 7714
He, XG,Jin, CH,Ma, JP,et al. Semi-inclusive B -> K(K*)X decays with initial bound state effects[J]. PHYSICAL REVIEW D,2001,64(1):-.
APA He, XG,Jin, CH,Ma, JP,&He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan..(2001).Semi-inclusive B -> K(K*)X decays with initial bound state effects.PHYSICAL REVIEW D,64(1),-.
MLA He, XG,et al."Semi-inclusive B -> K(K*)X decays with initial bound state effects".PHYSICAL REVIEW D 64.1(2001):-.
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