Resolving the low mass puzzle of ${\Lambda }_c(2940{)}^{+}$

Si-Qiang Luo, Bing Chen, Zhan-Wei Liu +1

For the long standing low mass puzzle of ${\Lambda }_c(2940{)}^{+}$, we propose an unquenched picture. Our calculation explicitly shows that the mass of the ${\Lambda }_c(2P,3/2^{-})$ state can be lowered…