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He, XG; Jin, CH; Ma, JP; He, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.
Semi-inclusive B -> K(K*)X decays with initial bound state effects
Source PublicationPHYSICAL REVIEW D
KeywordImproved Factorization Approach Direct Cp Violation B-meson Decays Qcd Factorization Heavy-quark Electroweak Penguins V-ub Spectrum Physics Phases
AbstractThe 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.
2001
ISSN0556-2821
Volume64Issue:1Pages:-
Subject AreaPhysics
Indexed BySCI
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12714
CollectionSCI期刊论文
Corresponding AuthorHe, XG , Natl Taiwan Univ, Dept Phys, Taipei, Taiwan.
Recommended Citation
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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