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B-c -> D-(*T-) decays in perturbative QCD approach
Zou, ZT; Yu, X; Lu, CD; Zou, ZT (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
2013
发表期刊PHYSICAL REVIEW D
ISSN1550-7998
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
部门归属[Zou, Zhi-Tian; Yu, Xin; Lu, Cai-Dian] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; [Zou, Zhi-Tian; Yu, Xin; Lu, Cai-Dian] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China; [Lu, Cai-Dian] Chinese Acad Sci, Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China
关键词Meson Decays Sum-rules Heavy Quarkonium Tensor Mesons Lifetime Pi
学科领域Physics
资助者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] ; 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] ; 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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收录类别SCI
语种英语
资助者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] ; 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] ; 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]
WOS记录号WOS:000317912600012
引用统计
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.itp.ac.cn/handle/311006/15378
专题理论物理所SCI论文
通讯作者Zou, ZT (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
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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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