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Zou, ZT; Yu, X; Lu, CD; Zou, ZT (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
B-c -> D-(*T-) decays in perturbative QCD approach
Source PublicationPHYSICAL REVIEW D
Language英语
KeywordMeson Decays Sum-rules Heavy Quarkonium Tensor Mesons Lifetime Pi
AbstractIn 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
2013
ISSN1550-7998
Volume87Issue:7Pages:74027
Subject AreaPhysics
Indexed BySCI
Funding OrganizationNational Science Foundation of China [11228512, 11235005, 11075168]; Chinese Academy of Sciences [KJCX2.YW.W10] ; National Science Foundation of China [11228512, 11235005, 11075168]; Chinese Academy of Sciences [KJCX2.YW.W10] ; National Science Foundation of China [11228512, 11235005, 11075168]; Chinese Academy of Sciences [KJCX2.YW.W10] ; National Science Foundation of China [11228512, 11235005, 11075168]; Chinese Academy of Sciences [KJCX2.YW.W10]
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/15378
Collection理论物理所科研产出_SCI期刊论文
Corresponding AuthorZou, ZT (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
Recommended Citation
GB/T 7714
Zou, ZT,Yu, X,Lu, CD,et al. B-c -> D-(*T-) decays in perturbative QCD approach[J]. PHYSICAL REVIEW D,2013,87(7):74027.
APA Zou, ZT,Yu, X,Lu, CD,&Zou, ZT .(2013).B-c -> D-(*T-) decays in perturbative QCD approach.PHYSICAL REVIEW D,87(7),74027.
MLA Zou, ZT,et al."B-c -> D-(*T-) decays in perturbative QCD approach".PHYSICAL REVIEW D 87.7(2013):74027.
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