First Radial Excitations of Baryons in a Contact Interaction: Mass Spectrum
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866916386773663744 |
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| author | Gutiérrez-Guerrero, L. X. Raya, Alfredo Albino, L. Hernández-Pinto, R. J. |
| author_facet | Gutiérrez-Guerrero, L. X. Raya, Alfredo Albino, L. Hernández-Pinto, R. J. |
| contents | We compute masses of twenty positive parity first radial excitations of spin-$1/2$ and $3/2$ baryons composed of u,d,s,c and b quarks in a quark-diquark picture within a contact interaction model. These excitations comprise of two elements: one characterized by a zero in the Faddeev amplitude, representing a radial excitation of the quark-diquark system and the other marked by a zero in the diquark's Bethe-Salpeter amplitude, corresponding to an intrinsic excitation of the diquark correlation. Wherever possible, we compare our results with other models and/or experiment. We verify that the masses obtained through our model conform to the spacing rules for all the baryons studied, whether light or heavy and whether of spin 1/2 or 3/2. The computed masses do not just offer a guide to the future experimental searches but also compare well with the existing candidates for the possible radial excitations of some heavy baryons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_06057 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | First Radial Excitations of Baryons in a Contact Interaction: Mass Spectrum Gutiérrez-Guerrero, L. X. Raya, Alfredo Albino, L. Hernández-Pinto, R. J. High Energy Physics - Phenomenology We compute masses of twenty positive parity first radial excitations of spin-$1/2$ and $3/2$ baryons composed of u,d,s,c and b quarks in a quark-diquark picture within a contact interaction model. These excitations comprise of two elements: one characterized by a zero in the Faddeev amplitude, representing a radial excitation of the quark-diquark system and the other marked by a zero in the diquark's Bethe-Salpeter amplitude, corresponding to an intrinsic excitation of the diquark correlation. Wherever possible, we compare our results with other models and/or experiment. We verify that the masses obtained through our model conform to the spacing rules for all the baryons studied, whether light or heavy and whether of spin 1/2 or 3/2. The computed masses do not just offer a guide to the future experimental searches but also compare well with the existing candidates for the possible radial excitations of some heavy baryons. |
| title | First Radial Excitations of Baryons in a Contact Interaction: Mass Spectrum |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2409.06057 |