Bc mesons in a Bethe-Salpeter model -: art. no. 094001

被引：24

作者：

El-Hady, AA ^{[1
]}

Lodhi, MAK

Vary, JP

机构：

[1] Zagazig Univ, Dept Phys, Zagazig, Egypt

[2] Texas Tech Univ, Dept Phys, Lubbock, TX 79409 USA

[3] Iowa State Univ Sci & Technol, Dept Phys & Astron, Ames, IA 50011 USA

来源：

PHYSICAL REVIEW D | 1999年 / 59卷 / 09期

关键词：

D O I：

10.1103/PhysRevD.59.094001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We apply our Bethe-Salpeter model for mesons to the B-c family with parameters fixed in our previous investigation. We evaluate the mass of the pseudoscalar B-c meson as 6.356 and 6.380 GeV/c(2) and the lifetime as 0.47 and 0.46 ps, respectively, in two reductions of the Bethe-Salpeter equation, in good agreement with the recently reported mass of 6.40+/-0.39 (stat) +/-0.13 (syst) GeV/c(2) and Lifetime of 0.46(-0.16)(+0.18) (stat) +/-0.03 (syst) ps by the CDF Collaboration. We evaluate the decay constant of the B-c meson and compare different contributions to its decay width. [S0556-2821(99)02203-1].

引用

页数：4

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