Investigation of ${\Lambda }_c\to (\Lambda ,n){\ell }^{+}{\nu }_{\ell }$ Decays in Standard Model and Beyond

Zhi-Hua Zhang, Ying Li

In this work, we study the decays ${\Lambda }_c\to (\Lambda ,n){\ell }^{+}{\nu }_{\ell }$ ($\ell =\mu ,e$) within a model-independent framework. We calculate the helicity amplitudes for all possible four-fe…