Exotic Ω_c⁰ baryons from meson-baryon scattering

2018/12/10 by Gloria Montana, Angels Ramos, Albert Feijoo
Physics and Astronomy · #hep-ph #nucl-th

paper · pdf · doi:10.1088/1742-6596/1137/1/012040

published as Journal of Physics: Conf. Series 1137 (2019) 012040 · Proceedings of the talk by G. Montana at BEACH2018 - XIII International Conference on Beauty, Charm and Hyperon Hadrons in Peniche, Portugal, 17-23 June 2018; 5 pages, 1 figure, 2 tables. arXiv admin note: substantial text overlap with arXiv:1812.03898

arxiv created 2018/12/10 · arxiv updated 2019/03/25

Abstract

A meson-baryon interaction in the charm +1, strangeness -2 and isospin 0 sector is built from a t-channel vector meson exchange model employing effective Lagrangians. The implementation of coupled-channel unitarization in the s-wave scattering amplitudes gives rise to two structures that have similar masses and widths to those of the Ω_c(3050)⁰ and Ω_c(3090)⁰ states recently observed by the LHCb collaboration. A meson-baryon molecular interpretation of these resonances would assign their spin-parity to be J^P=1/2^-.

Citations

• The molecular nature of some Ω_c⁰ states