Double strangeness molecular-type pentaquarks from coupled channel dynamics
Abstract. The existence of the nucleonic pentaquark resonances Pc (4312), Pc(4380), Pc(4440) and Pc(4457), established by the LHCb collaboration, has been one of the major discoveries in hadron physics in the latest years. This has been followed by the discovery of pentaquarks with one unit of stran...
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| Format: | Article |
| Language: | English |
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EDP Sciences
2024-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://www.epj-conferences.org/articles/epjconf/pdf/2024/01/epjconf_meson2023_05002.pdf |
| _version_ | 1797299399062192128 |
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| author | Magas Volodymyr Marsé-Valera Arnau Ramos Angels |
| author_facet | Magas Volodymyr Marsé-Valera Arnau Ramos Angels |
| author_sort | Magas Volodymyr |
| collection | DOAJ |
| description | Abstract. The existence of the nucleonic pentaquark resonances Pc (4312), Pc(4380), Pc(4440) and Pc(4457), established by the LHCb collaboration, has been one of the major discoveries in hadron physics in the latest years. This has been followed by the discovery of pentaquarks with one unit of strangeness, Pcs(4338) and Pcs(4457). Most of these states can be understood as hadronic molecules, namely bound states of a sufficiently attractive meson-baryon interaction. A widely used model, based on unitarized meson-baryon amplitudes obtained from vector meson exchange interactions derived from the hidden gauge formalism, which predicted these states prior to their discovery, is also predicting the existence of pentaquarks with double strangeness content, at around 4500 MeV and 4600 MeV [1]. Our model also suggest that one of these double strangeness pentaquarks can be seen in the weak decay of the Eb baryon into J/ΨϕΞ. A detailed study of this reaction is still under investigation, but in these proceedings we shall show some preliminary results, which confirm the possibility of observing traces of S=-2 pentaquark in invariant mass spectra of J/ΨΞ pairs produced in the decays Ξb → J/ΨϕΞ. |
| first_indexed | 2024-03-07T22:49:07Z |
| format | Article |
| id | doaj.art-05993e98667a4c7f8484111179b47ff8 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-03-07T22:49:07Z |
| publishDate | 2024-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-05993e98667a4c7f8484111179b47ff82024-02-23T10:28:26ZengEDP SciencesEPJ Web of Conferences2100-014X2024-01-012910500210.1051/epjconf/202429105002epjconf_meson2023_05002Double strangeness molecular-type pentaquarks from coupled channel dynamicsMagas Volodymyr0Marsé-Valera Arnau1Ramos Angels2Departament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos (ICCUB) Universitat de BarcelonaDepartament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos (ICCUB) Universitat de BarcelonaDepartament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos (ICCUB) Universitat de BarcelonaAbstract. The existence of the nucleonic pentaquark resonances Pc (4312), Pc(4380), Pc(4440) and Pc(4457), established by the LHCb collaboration, has been one of the major discoveries in hadron physics in the latest years. This has been followed by the discovery of pentaquarks with one unit of strangeness, Pcs(4338) and Pcs(4457). Most of these states can be understood as hadronic molecules, namely bound states of a sufficiently attractive meson-baryon interaction. A widely used model, based on unitarized meson-baryon amplitudes obtained from vector meson exchange interactions derived from the hidden gauge formalism, which predicted these states prior to their discovery, is also predicting the existence of pentaquarks with double strangeness content, at around 4500 MeV and 4600 MeV [1]. Our model also suggest that one of these double strangeness pentaquarks can be seen in the weak decay of the Eb baryon into J/ΨϕΞ. A detailed study of this reaction is still under investigation, but in these proceedings we shall show some preliminary results, which confirm the possibility of observing traces of S=-2 pentaquark in invariant mass spectra of J/ΨΞ pairs produced in the decays Ξb → J/ΨϕΞ.https://www.epj-conferences.org/articles/epjconf/pdf/2024/01/epjconf_meson2023_05002.pdf |
| spellingShingle | Magas Volodymyr Marsé-Valera Arnau Ramos Angels Double strangeness molecular-type pentaquarks from coupled channel dynamics EPJ Web of Conferences |
| title | Double strangeness molecular-type pentaquarks from coupled channel dynamics |
| title_full | Double strangeness molecular-type pentaquarks from coupled channel dynamics |
| title_fullStr | Double strangeness molecular-type pentaquarks from coupled channel dynamics |
| title_full_unstemmed | Double strangeness molecular-type pentaquarks from coupled channel dynamics |
| title_short | Double strangeness molecular-type pentaquarks from coupled channel dynamics |
| title_sort | double strangeness molecular type pentaquarks from coupled channel dynamics |
| url | https://www.epj-conferences.org/articles/epjconf/pdf/2024/01/epjconf_meson2023_05002.pdf |
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