Emergence of a complete heavy-quark spin symmetry multiplet: seven molecular pentaquarks in light of the latest LHCb analysis
| dc.contributor.author | LIU, Ming-Zhu | |
| dc.contributor.author | PAN, Ya-Wen | |
| dc.contributor.author | PENG, Fang-Zheng | |
| hal.structure.identifier | Centre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG] | |
| dc.contributor.author | SÁNCHEZ SÁNCHEZ, Mario | |
| dc.contributor.author | GENG, Li-Sheng | |
| dc.contributor.author | HOSAKA, Atsushi | |
| dc.contributor.author | PAVON VALDERRAMA, Manuel | |
| dc.date.issued | 2019 | |
| dc.description.abstractEn | A recent analysis by the LHCb Collaboration suggests the existence of three narrow pentaquarklike states—the Pc(4312), Pc(4440), and Pc(4457)—instead of just one in the previous analysis [the Pc(4450)]. The closeness of the Pc(4312) to the D¯Σc threshold and the Pc(4440) and Pc(4457) to the D¯*Σc threshold suggests a molecular interpretation of these resonances. We show that these three pentaquarklike resonances can be naturally accommodated in a contact-range effective field theory description that incorporates heavy-quark spin symmetry. This description leads to the prediction of all the seven possible S-wave heavy antimeson-baryon molecules [that is, there should be four additional molecular pentaquarks in addition to the Pc(4312), Pc(4440), and Pc(4457)], providing the first example of a heavy-quark spin symmetry molecular multiplet that is complete. If this is confirmed, it will not only give us an impressive example of the application of heavy-quark symmetries and effective field theories in hadron physics, it will also uncover a clear and powerful ordering principle for the molecular spectrum, reminiscent of the SU(3)-flavor multiplets to which the light hadron spectrum conforms. | |
| dc.language.iso | en | |
| dc.subject.en | Elementary Particles and Fields | |
| dc.subject.en | pentaquark | |
| dc.subject.en | heavy quark: symmetry | |
| dc.subject.en | heavy quark: spin | |
| dc.subject.en | spin: symmetry | |
| dc.subject.en | effective field theory | |
| dc.subject.en | LHC-B | |
| dc.subject.en | numerical calculations | |
| dc.subject.en | new physics | |
| dc.title.en | Emergence of a complete heavy-quark spin symmetry multiplet: seven molecular pentaquarks in light of the latest LHCb analysis | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1103/PhysRevLett.122.242001 | |
| dc.subject.hal | Physique [physics]/Physique des Hautes Energies - Phénoménologie [hep-ph] | |
| dc.subject.hal | Physique [physics]/Physique des Hautes Energies - Expérience [hep-ex] | |
| dc.subject.hal | Physique [physics]/Physique des Hautes Energies - Réseau [hep-lat] | |
| dc.subject.hal | Physique [physics]/Physique Nucléaire Théorique [nucl-th] | |
| dc.identifier.arxiv | 1903.11560 | |
| bordeaux.journal | Phys.Rev.Lett. | |
| bordeaux.page | 242001 | |
| bordeaux.volume | 122 | |
| bordeaux.issue | 24 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-02097324 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-02097324v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Phys.Rev.Lett.&rft.date=2019&rft.volume=122&rft.issue=24&rft.spage=242001&rft.epage=242001&rft.au=LIU,%20Ming-Zhu&PAN,%20Ya-Wen&PENG,%20Fang-Zheng&S%C3%81NCHEZ%20S%C3%81NCHEZ,%20Mario&GENG,%20Li-Sheng&rft.genre=article |
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