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

Abstract

The Λ_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^π=3/2^- channel. The partial widths Λ_c(2940)^+\to ND and Λ_c(2940)^+\to Σ_c πare 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.

5 pages, no figures, 4 tables

References in corpus (5)

• Constituent quark model study of the meson spectra
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Quark-model study of few-baryon systems
• The s-wave charmed baryon resonances from a coupled-channel approach with heavy quark symmetry
• The observed charmed hadron ${\Lambda }_c(2940{)}^{+}$ and the $D^{\ast }N$ interaction

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