Quark model description of the Λc(2940)+ as a molecular D⁎N state and the possible existence of the Λb(6248)

2012/10/09 by Pablo G. Ortega, P. G. Ortega, D. R. Entem +2 · 2 citations
Mathematics · Physics and Astronomy · #Algorithm #Mathematics #Meson #Nuclear physics research studies #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1016/j.physletb.2012.12.025

5 pages, no figures, 4 tables

arxiv created 2012/10/09 · openalex publication_date 2012/12/13 · arxiv updated 2015/06/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

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)⁺→ ND and Λ_c(2940)⁺→ Σ_c πare calculated and the results are consistent with the experimental data. Additionally a bottom partner B^*N is predicted with a mass of 6248 MeV/c².

Citations

• Strong two-body decays of theΛc(2940)+in a hadronic molecule picture
• Masses of excited heavy baryons in the relativistic quark–diquark picture
• Quark-model study of few-baryon systems
• Constituent quark model study of the meson spectra
• Gaussian expansion method for few-body systems

Cited by

• Strong decay of Λ _c(2940) Λ c ( 2940 ) as a 2P state in the Λ _c Λ c family
• P-wave single charmed baryons of the SU(3) flavor \bf3_F