1210.2633 (P. G. Ortega et al.)

Quark model description of the Λ_c(2940)^+ as a molecular D^*N
state and the possible existence of the Λ_b(6248)    [PDF]

P. G. Ortega, D. R. Entem, F. Fernández

The \Lambda_c(2940)^+ baryon is studied in a constituent quark model as a molecular state composed by nucleons and D^* mesons. A bound state with the right binding energy is found for the J^\pi=3/2^- channel. The partial widths \Lambda_c(2940)^+\to ND and \Lambda_c(2940)^+\to \Sigma_c \pi are calculated and the results are consistent with the experimental data. Additionally a bottom partner \bar B^*N is predicted with a mass of 6248 MeV/c^2.

View original: http://arxiv.org/abs/1210.2633