论文标题
$ \ bar {b} \ tox_sγ$ in Blmssmsm
$\bar{B}\to X_s γ$ in BLMSSM
论文作者
论文摘要
采用有效的拉格朗日方法,我们研究了在标准模型的最小超对称扩展中变化的中性中性电流$ b \ tosγ$,巴里昂和lepton数字是局部规格对称性。对参数的约束进行数值研究,并使用$ \ bar {B} \与X_Sγ$的分支比率的实验数据进行了研究。此外,我们提出了以$ \ bar {b} \ rightArrowx_sγ$和时间依赖的cp-asmymmetry在$ b \ rightarrow k^*γ$中的时间相关的cp-asmymemetry的更正。有了适当的对参数的假设,我们发现直接的cp-violation $ a_ {cp} $很小,而对$ s_ {k^*γ} $的一环贡献可能很重要。
Applying the effective Lagrangian method, we study the Flavor Changing Neutral Current $b\to sγ$ within the minimal supersymmetric extension of the standard model where baryon and lepton numbers are local gauge symmetries. Constraints on the parameters are investigated numerically with the experimental data on branching ratio of $\bar{B}\to X_sγ$. Additionally, we present the corrections to direct CP-violation in $\bar{B}\rightarrow X_sγ$ and time-dependent CP-asymmetry in $B\rightarrow K^*γ$. With appropriate assumptions on parameters, we find the direct CP-violation $A_{CP}$ is very small, while one-loop contributions to $S_{K^*γ}$ can be significant.