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Interpretations of the new LHCb $P_c(4337)^+$ pentaquark state

dc.contributor.authorYAN, Mao-Jun
dc.contributor.authorPENG, Fang-Zheng
hal.structure.identifierCentre d'Etudes Nucléaires de Bordeaux Gradignan [CENBG]
dc.contributor.authorSÁNCHEZ SÁNCHEZ, Mario
dc.contributor.authorPAVON VALDERRAMA, Manuel
dc.date.issued2022
dc.description.abstractEnRecently the LHCb Collaboration has observed a new pentaquark state, the $P_c(4337)^+$. Owing to its proximity to the $\chi _{c0}(1S) p$, ${\bar{D}}^* \varLambda _c$, ${\bar{D}} \varSigma _c$ and ${\bar{D}} \varSigma _c^*$ thresholds, this new pentaquark might very well be a meson–baryon bound state. However its spin and parity have not been determined yet and none of the previous possibilities can be ruled out.We briefly explore a few of these options and the consequences they entail in the present manuscript: (i) the $P_c(4337)^+$ might be a $\chi _{c0}(1S) p$ bound state, (ii) the $P_c(4312)^+$ and $P_c(4337)^+$ might be ${\bar{D}}^* \varLambda _c$ and ${\bar{D}} \varSigma _c$ states close to threshold, respectively, where the Breit–Wigner mass might not correspond to the location of the poles, (iii) the locations of the $P_c(4312)^+$ and $P_c(4337)^+$ might be explained in terms of the ${\bar{D}}^* \varLambda _c$-${\bar{D}} \varSigma _c$ and ${\bar{D}}^* \varLambda _c$-${\bar{D}} \varSigma _c^*$ coupled channel dynamics. This last option, though not the most probable explanation, is still potentially compatible with the double peak solution of the $P_{cs}(4459)^0$ and with what we know of the $P_c(4312)^+$. As a byproduct of the previous explorations, we conjecture the existence of a series of anticharmed meson – antitriplet charmed baryon bound states and calculate their masses.
dc.language.isoen
dc.subject.enmeson baryon: bound state
dc.subject.enpentaquark
dc.subject.enLHC-B
dc.subject.enquantum number
dc.subject.enpole
dc.subject.encoupled channel
dc.subject.enBreit-Wigner
dc.title.enInterpretations of the new LHCb $P_c(4337)^+$ pentaquark state
dc.typeArticle de revue
dc.identifier.doi10.1140/epjc/s10052-022-10522-7
dc.subject.halPhysique [physics]/Physique des Hautes Energies - Phénoménologie [hep-ph]
dc.subject.halPhysique [physics]/Physique des Hautes Energies - Expérience [hep-ex]
dc.subject.halPhysique [physics]/Physique Nucléaire Théorique [nucl-th]
dc.identifier.arxiv2108.05306
bordeaux.journalEur.Phys.J.C
bordeaux.page574
bordeaux.volume82
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierhal-03324270
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03324270v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Eur.Phys.J.C&rft.date=2022&rft.volume=82&rft.issue=6&rft.spage=574&rft.epage=574&rft.au=YAN,%20Mao-Jun&PENG,%20Fang-Zheng&S%C3%81NCHEZ%20S%C3%81NCHEZ,%20Mario&PAVON%20VALDERRAMA,%20Manuel&rft.genre=article


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