论文标题
弱的$之一
Weak $Ξ_{QQ} \to Σ_Q \ell^+ \ell^-$ decays induced by FCNC in QCD
论文作者
论文摘要
随着发现双重重$ξ_{cc} $ BARYON的发现，开始了对双重重桶的特性的全面研究。在目前的工作中，我们检查了$ξ_{bb} \ toσ_b\ ell^+ \ ell^ - $和$ξ_{cc} \ toσ_c\ ell^+ el^+ el^+ el^ - $衰减 - 在轻度框架中，在光线框架的框架中，在浅频中性通行（FCNC）中引起的诱发。在获得张量电流引起的形式因子的总和规则后，估计相关过渡的分支比率。我们发现，$ c \ u $过渡的分支比率约为$ b \ to d $ transition的五个订单。我们的发现也与其他方法进行了比较。
With the discovery of the doubly heavy $Ξ_{cc}$ baryon, comprehensive studies of the properties of the doubly heavy baryons are started. In the present work, we examine the $Ξ_{bb} \to Σ_b \ell^+ \ell^-$ and $Ξ_{cc} \to Σ_c \ell^+ \ell^-$ decays induced by flavor-changing neutral currents (FCNC) in the framework of the light-cone sum rules. After obtaining the sum rules for the form factors induced by the tensor current, the branching ratios of the relevant transitions are estimated. We found that the branching ratio for the $c \to u$ transition is around five orders smaller than the $b \to d$ transition. Our findings are also compared with other approaches.
