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B to light meson transition form factors calculated in perturbative QCD approach
Lv CD(吕才典); Yang MZ(杨茂志); Lu, CD; Yang, MZ
2003
发表期刊EUROPEAN PHYSICAL JOURNAL C
卷号28期号:4页码:515-523
通讯作者Inst High Energy Phys, Beijing 100039, Peoples R China ; CCAST, World Lab, Beijing 100080, Peoples R China
文章类型Article
摘要We calculate the B --> P, B --> V (P is the light pseudoscalar meson, V the light vector meson) form factors in the large-recoil limit in the perturbative QCD approach, including both the vector (axial vector) and tensor operators. In general there are two leading components phi(B) and phi(B) for the B meson wave functions. We consider both contributions of them. Sudakov effects (k(perpendicular to) and threshold resummation) are included to regulate the soft end-point singularity. By choosing the hard scale as the maximum virtualities of the internal particles in the hard b quark decay amplitudes, Sudakov factors can effectively suppress the long-distance soft contribution. The hard contribution can be dominant in these approaches.
学科领域Physics
DOI10.1140/epjc/s2003-01199-y
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语种英语
WOS研究方向Physics
WOS类目Physics, Particles & Fields
WOS记录号WOS:000184157200007
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被引频次:126[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/311005/237785
专题理论物理室
作者单位中国科学院高能物理研究所
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Lv CD,Yang MZ,Lu, CD,et al. B to light meson transition form factors calculated in perturbative QCD approach[J]. EUROPEAN PHYSICAL JOURNAL C,2003,28(4):515-523.
APA 吕才典,杨茂志,Lu, CD,&Yang, MZ.(2003).B to light meson transition form factors calculated in perturbative QCD approach.EUROPEAN PHYSICAL JOURNAL C,28(4),515-523.
MLA 吕才典,et al."B to light meson transition form factors calculated in perturbative QCD approach".EUROPEAN PHYSICAL JOURNAL C 28.4(2003):515-523.
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