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B-c -> D-(*T-) decays in perturbative QCD approach
Zou ZT(邹芝田); Yu X(余欣); 吕才典;Zou, ZT; Yu, X; Lu, CD
2013
发表期刊PHYSICAL REVIEW D
卷号87期号:7页码:74027
摘要In this work, we investigate B-c -> D-(*T-) decays in the perturbative QCD approach, based on k(T) factorization, where T denotes a light tensor meson. For all decays considered in this work, there are no contributions from factorizable emission diagrams because the emitted tensor meson cannot be generated from (axial-)vector current or (pseudo)scalar density. We find that the annihilation amplitudes are dominant in these decays due to the large Cabibbo-Kobayashi-Maskawa elements, which can be perturbatively calculated without parametrization in the pQCD approach. The branching ratios of the B-c -> D-(*K-)(2)* decays can reach 10(-5) to 10(-4), which is one order of magnitude larger than that of the corresponding B-c -> D-(*K-)* decays, where heavy cancellation occurred between the penguin emission and tree annihilation diagrams. With such large branching ratios, they can very likely be observed in the ongoing LHCb experiments. We also predict a large percentage of transverse polarizations in those W-annihilation-diagram dominant B-c -> D-(*T-) decay channels. DOI: 10.1103/PhysRevD. 87.074027
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.87.074027
收录类别SCI
WOS记录号WOS:000317912600012
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被引频次:14[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/311005/224587
专题理论物理室
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Zou ZT,Yu X,吕才典;Zou, ZT,et al. B-c -> D-(*T-) decays in perturbative QCD approach[J]. PHYSICAL REVIEW D,2013,87(7):74027.
APA 邹芝田,余欣,吕才典;Zou, ZT,Yu, X,&Lu, CD.(2013).B-c -> D-(*T-) decays in perturbative QCD approach.PHYSICAL REVIEW D,87(7),74027.
MLA 邹芝田,et al."B-c -> D-(*T-) decays in perturbative QCD approach".PHYSICAL REVIEW D 87.7(2013):74027.
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