Interpretations of the new LHCb $P_c(4337)^+$ pentaquark state
| dc.contributor.author | YAN, Mao-Jun | |
| 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 | PAVON VALDERRAMA, Manuel | |
| dc.date.issued | 2022 | |
| dc.description.abstractEn | Recently 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.iso | en | |
| dc.subject.en | meson baryon: bound state | |
| dc.subject.en | pentaquark | |
| dc.subject.en | LHC-B | |
| dc.subject.en | quantum number | |
| dc.subject.en | pole | |
| dc.subject.en | coupled channel | |
| dc.subject.en | Breit-Wigner | |
| dc.title.en | Interpretations of the new LHCb $P_c(4337)^+$ pentaquark state | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1140/epjc/s10052-022-10522-7 | |
| 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 Nucléaire Théorique [nucl-th] | |
| dc.identifier.arxiv | 2108.05306 | |
| bordeaux.journal | Eur.Phys.J.C | |
| bordeaux.page | 574 | |
| bordeaux.volume | 82 | |
| bordeaux.issue | 6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-03324270 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-03324270v1 | |
| bordeaux.COinS | ctx_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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