Search for the $\Sigma (1380)1/2^{-}$ state in ${\Lambda }_c^{+}\to \gamma {\pi }^{+}\Lambda$ decay by triangle singularity

Ke Wang, Yu-Fei Wang, Bo-Chao Liu +1

In this work, we investigate the resonance production in ${\Lambda }_c^{+}\to \gamma {\pi }^{+}\Lambda$ decay through the triangle singularity (TS) mechanism, within an effective Lagrangian approach. We find…