Calculation of BR((B)over-bar0→Λc++ (p)over-bar) in the perturbative QCD approach

被引：17

作者：

He, Xiao-Gang ^{[1
]}

Li, Tong

Li, Xue-Qian

Wang, Yu-Ming

机构：

[1] Nankai Univ, Dept Phys, Tianjin 300071, Peoples R China

[2] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan

[3] Natl Taiwan Univ, Ctr Theoret Sci, Taipei, Taiwan

来源：

PHYSICAL REVIEW D | 2007年 / 75卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.75.034011

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the branching ratio of B-0 ->Lambda(+)(c)p in the PQCD approach. Most previous model calculations obtained branching ratios significantly larger than experimental data. We find that the predicted branching ratio for BR(B-0 ->Lambda(+)(c)p) in the PQCD approach can vary over a range of (2.3 similar to 5.1)x10(-5) with the largest uncertainty coming from the parameters in the wave function of Lambda(c). With the favored values for the parameters in the Lambda(+)(c) wave function, beta=1 GeV and m(q)=0.3 GeV, the branching ratio is about 2.3x10(-5) which is satisfactorily consistent with the value measured by experiments.

引用

页数：12

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