Double Charm Decays of B Mesons in mSUGRA Model

被引：0

作者：

吕林霞 ^{[1
]}

肖振军 ^{[2
]}

王帅伟 ^{[1
]}

李文君 ^{[3
]}

机构：

[1] Physics and Electronic Engineering College,Nanyang Normal University

[2] Department of Physics and Institute of Theoretical Physics,Nanjing Normal University

[3] Department of Physics,Henan Normal University

来源：

CommunicationsinTheoreticalPhysics | 2011年 / 56卷 / 07期

关键词：

charm decay; minimal supergravity model; branching ratio; CP asymmetry;

D O I：

暂无

中图分类号：

O572.33 [介子];

学科分类号：

070202 ;

摘要：

Based on the low energy effective Hamiitonian with naive factorization, we calculate the branching ratios （BRs） and CP asymmetries （CPAs） for the twenty three double charm decays B/Bs→Ds* Ds* in both the standard model （SM） and the minimal supergravity （mSUGRA） model. Within the considered parameter space, we find that （a） the theoretical predictions for the BRs, CPAs and the polarization fractions in the SM and the mSUGRA model are all consistent with the currently available data within ±2σ errors; （b） For all the considered decays, the supersymmetric contributions in the mSUGRA model are very small, less than 7% numerically. It may be difficult to observe so small SUSY contributions even at LHC.

引用

页码：125 / 133

页数：9