Rare baryonic decays ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ in the TTM model

Yan-Li Wen, Chong-Xing Yue, Jiao Zhang

In the framework of the top triangle moose $(TTM)$ model, we analyze the rare decays ${\Lambda }_b\to \Lambda l^{+}{l}^{-}(l=e,\mu ,\tau )$ by using the form factors calculated in full $QCD$. We…