Charmless decays of the B-meson in perturbative QCD
Guo, LB; Du DS(杜东生); Du, DS; Liu, LS
刊名JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
1999
卷号25期号:1页码:1-10
学科分类Physics
DOI10.1088/0954-3899/25/1/001
其他题名1
通讯作者Guo, LB (reprint author), Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei Province, Peoples R China.
文章类型Article
英文摘要Using the perturbative QCD method and Chau's six-quark-graph scheme, we report a theoretical calculation of exclusive nonleptonic decays of the B meson into two light pseodoscalar mesons in the context of the low-energy effective Hamiltonian. The contributions from both tree-level and one-loop diagrams are taken into account. Under the approximation of neglecting light quark and light meson masses, we find that (i) within perturbative QCD there is no singularity which exists in the computation of spacelike penguin diagrams when the BSW model is used; (ii) the contributions from spacelike-type (W-annihilation, W-exchange, spacelike penguin and penguin-annihilation) graphs are strongly suppressed relative to those from timelike-type (external W-emission, internal W-emission and timelike penguin) ones; (iii) our results are well below the experimental upper limits but lower than the BSW ones.
类目[WOS]Physics, Nuclear ; Physics, Particles & Fields
收录类别SCI
WOS记录号WOS:000078446200001
引用统计
被引频次:3[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/311005/225399
专题中国科学院高能物理研究所_理论物理室_期刊论文
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GB/T 7714
Guo, LB,Du DS,Du, DS,et al. Charmless decays of the B-meson in perturbative QCD[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,1999,25(1):1-10.
APA Guo, LB,杜东生,Du, DS,&Liu, LS.(1999).Charmless decays of the B-meson in perturbative QCD.JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,25(1),1-10.
MLA Guo, LB,et al."Charmless decays of the B-meson in perturbative QCD".JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 25.1(1999):1-10.
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