B-c -> D-(*T-) decays in perturbative QCD approach

ITP OpenIR > SCI期刊论文

	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**
发表期刊	PHYSICAL REVIEW D
语种	英语
关键词	Meson Decays Sum-rules Heavy Quarkonium Tensor Mesons Lifetime Pi
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
	2013
ISSN	1550-7998
卷号	87 期号:7 页码:74027
学科领域	Physics
收录类别	SCI
项目资助者	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]
引用统计	被引频次：20[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	SCI期刊论文
通讯作者	Zou, ZT (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
推荐引用方式 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.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
D-(T-) decays in perturbative QCD approach.pdf class="gray-color" id='span-bit-name-45532'>B-c -> D-(T-) decay（262KB）			开放获取	使用许可	请求全文