Consistent analysis of the B ->pi transition form factor in the whole physical region
黄涛(理); Wu XG(吴兴刚); Tao, H; Xing-Gang, W
刊名PHYSICAL REVIEW D
2005
卷号71期号:3页码:34018
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.71.034018
通讯作者CCAST, World Lab, Beijing 100080, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
文章类型Article
英文摘要In this paper, we show that the B-->pi transition form factor can be calculated by using the different approach in the different q(2) regions and they are consistent with each other in the whole physical region. For the B-->pi transition form factor in the large recoil regions, one can apply the perturbative quantum chromodynamics (PQCD) approach, where the transverse momentum dependence for both the hard-scattering part and the nonperturbative wave function, the Sudakov effects and the threshold effects are included to regulate the endpoint singularity and to derive a more reliable PQCD result. Pionic twist-3 contributions are carefully studied with a better endpoint behavior wave function for Psi(p) and we find that its contribution is less than the leading twist contribution. Both the two wave functions Psi(B) and (&UPsi;) over bar (B) of the B meson can give sizable contributions to the B-->pi transition form factor and should be kept for a better understanding of the B decays. The present obtained PQCD results can match with both the QCD light cone sum rule results and the extrapolated lattice QCD results in the large recoil regions.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS记录号WOS:000227319400036
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被引频次:2[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/311005/240557
专题中国科学院高能物理研究所_理论物理室_期刊论文
中国科学院高能物理研究所_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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Huang T,Wu XG,Tao, H,et al. Consistent analysis of the B ->pi transition form factor in the whole physical region[J]. PHYSICAL REVIEW D,2005,71(3):34018.
APA 黄涛,吴兴刚,Tao, H,&Xing-Gang, W.(2005).Consistent analysis of the B ->pi transition form factor in the whole physical region.PHYSICAL REVIEW D,71(3),34018.
MLA 黄涛,et al."Consistent analysis of the B ->pi transition form factor in the whole physical region".PHYSICAL REVIEW D 71.3(2005):34018.
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