Improved Light-cone QCD Sum Rule Analysis Of The Rare Decays ${\Lambda }_b\to \Lambda \gamma$ And ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$

Long-Fei Gan, Yong-Lu Liu, Wen-Bo Chen +1

We present a systematic light-cone QCD sum rule study of the exclusive rare radiative decay ${\Lambda }_b\to \Lambda \gamma$ and rare semileptonic decay ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ within the framew…