The molecular nature of some $\Omega_c^0$ states
| Autor: | Montana, Gloria, Ramos, Angels, Feijoo, Albert |
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| Rok vydání: | 2018 |
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| Druh dokumentu: | Working Paper |
| Popis: | A vector meson exchange model based on effective Lagrangians is used to build the meson--baryon interaction in the charm $+1$, strangeness $-2$ and isospin $0$ 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 $\Omega_c(3050)^0$ and $\Omega_c(3090)^0$ states observed by the LHCb collaboration. The interpretation of these resonances as pseudoscalar meson--baryon molecules would mean the assignment $J^P=1/2^-$ to their spin--parity. Comment: 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 |
| Databáze: | arXiv |
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