Double Charm Decays of B Mesons in mSUGRA Model

被引：0

作者：

Lue Lin-Xia ^{[1
]}

Xiao Zhen-Jun ^{[2
,3
]}

Wang Shuai-Wei ^{[1
]}

Li Wen-Jun ^{[4
]}

机构：

[1] Nanyang Normal Univ, Phys & Elect Engn Coll, Nanyang 473061, Peoples R China

[2] Nanjing Normal Univ, Dept Phys, Nanjing 210046, Peoples R China

[3] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210046, Peoples R China

[4] Henan Normal Univ, Dept Phys, Xinxiang 453007, Peoples R China

来源：

COMMUNICATIONS IN THEORETICAL PHYSICS | 2011年 / 56卷 / 01期

基金：

中国国家自然科学基金;

关键词：

charm decay; minimal supergravity model; branching ratio; CF asymmetry; CP VIOLATION; WEAK DECAYS; QCD FACTORIZATION; SUPERGRAVITY; SUPERSYMMETRY; ASYMMETRIES;

D O I：

暂无

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on the low energy effective Hamiltonian with naive factorization, we calculate the branching ratios (BRs) and CP asymmetries (CPAs) for the twenty three double charm decays B/B-s -> D-(*D-)((s))(*())((s)) in both the standard model (SM) and the minimal supergravity (mSUGRA) model. Within the considered parameter space, we End 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 +/- 2 sigma. 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

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