Isgur-Wise function for Lambda(b)->Lambda(c) in the BS approach
Guo XH(郭新恒); Guo, XH; Muta, T
刊名PHYSICAL REVIEW D
1996
卷号54期号:7页码:4629-4634
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.54.4629
通讯作者ACAD SINICA,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA
文章类型Article
英文摘要In the heavy quark limit, the heavy baryon Lambda(Q) (Q = b or c) can be regarded as composed of a heavy quark and a scalar light diquark which has good spin and flavor quantum numbers. Based on this picture we establish the Bethe-Salpeter (BS) equation for Lambda(Q) in the leading order of 1/m(Q) expansion. With the kernel containing both the scalar confinement and one-gluon-exchange terms we solve the BS equation numerically. The Isgur-Wise function for Lambda(b) --> Lambda(c) is obtained numerically from our model. A comparison with other model calculations is also presented. It seems that the Isgur-Wise function for Lambda(b) --> Lambda(c) drops faster than that for B --> D. The differential and total decay widths for Lambda(c)l(nu)over bar> are given in the limit m(b,c) --> infinity.
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:A1996VM97700044
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239989
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Guo XH,Guo, XH,Muta, T. Isgur-Wise function for Lambda(b)->Lambda(c) in the BS approach[J]. PHYSICAL REVIEW D,1996,54(7):4629-4634.
APA 郭新恒,Guo, XH,&Muta, T.(1996).Isgur-Wise function for Lambda(b)->Lambda(c) in the BS approach.PHYSICAL REVIEW D,54(7),4629-4634.
MLA 郭新恒,et al."Isgur-Wise function for Lambda(b)->Lambda(c) in the BS approach".PHYSICAL REVIEW D 54.7(1996):4629-4634.
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