Strong decay of $$\Lambda _c(2940)$$ Λc(2940) as a 2P state in the $$\Lambda _c$$ Λc family

Abstract

Abstract Considering the mass, parity and $$D^0 p$$ D0p decay mode, we tentatively assign the $$\Lambda _c(2940)$$ Λc(2940) as the $$P-$$ P- wave states with one radial excitation. Then, via studying the strong decay behavior of the $$\Lambda _c(2940)$$ Λc(2940) within the $$^3P_0$$ 3P0 model, we obtain that the total decay widths of the $$\Lambda _{c1}(\frac{1}{2}^-,2P)$$ Λc1(12-,2P) and $$\Lambda _{c1}(\frac{3}{2}^-,2P)$$ Λc1(32-,2P) states are 16.27 and 25.39 MeV, respectively. Compared with the experimental total width $$27.7^{+8.2}_{-6.0}\pm 0.9^{+5.2}_{-10.4}~\mathrm {MeV}$$ 27.7-6.0+8.2±0.9-10.4+5.2MeV measured by LHCb Collaboration, both assignments are allowed, and the $$J^P=\frac{3}{2}^-$$ JP=32- assignment is more favorable. Other $$\lambda $$ λ -mode $$\Sigma _c(2P)$$ Σc(2P) states are also investigated, which are most likely to be narrow states and have good potential to be observed in future experiments.