English

The molecular nature of some $\Omega_c^0$ states

High Energy Physics - Phenomenology 2018-12-11 v1 Nuclear Theory

Abstract

A vector meson exchange model based on effective Lagrangians is used to build the meson--baryon interaction in the charm +1+1, strangeness 2-2 and isospin 00 sector. The s-wave scattering amplitudes resulting from the unitarization in coupled-channels show two resonances with masses and widths that are in very good agreement with those of the experimental Ωc(3050)0\Omega_c(3050)^0 and Ωc(3090)0\Omega_c(3090)^0 states observed by the LHCb collaboration. The interpretation of these resonances as pseudoscalar meson--baryon molecules would mean the assignment JP=1/2J^P=1/2^- to their spin--parity.

Keywords

Cite

@article{arxiv.1812.03898,
  title  = {The molecular nature of some $\Omega_c^0$ states},
  author = {Gloria Montana and Angels Ramos and Albert Feijoo},
  journal= {arXiv preprint arXiv:1812.03898},
  year   = {2018}
}

Comments

6 pages, 2 figures, 2 tables, contribution to the proceedings of the XXII International Conference on Few-Body Problems in Physics (FB22) 2018, July 9-13, Caen, France. arXiv admin note: substantial text overlap with arXiv:1812.03890