CERN Accelerating science

Article
Report number arXiv:1907.05322
Title Five-flavor pentaquarks and other light- and heavy-flavor symmetry partners of the LHCb hidden-charm pentaquarks
Related titleFive-flavor pentaquarks and other light- and heavy-flavor symmetry partners of the LHCb hidden-charm pentaquarks
Author(s) Peng, Fang-Zheng (Beihang U.) ; Liu, Ming-Zhu (Beihang U.) ; Pan, Ya-Wen (Beihang U.) ; Sánchez Sánchez, Mario (CENBG, Gradignan) ; Pavon Valderrama, Manuel (Beihang U.)
Publication 2022-10
Imprint 2019-07-11
Number of pages 21
Note 13 pages, 4 tables, corresponds to published version
In: Nucl. Phys. B 983 (2022) 115936
DOI 10.1016/j.nuclphysb.2022.115936
Subject category nucl-th ; Nuclear Physics - Theory ; hep-lat ; Particle Physics - Lattice ; hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Accelerator/Facility, Experiment CERN LHC ; LHCb
Abstract The discovery of three pentaquark peaks -- the Pc(4312), Pc(4440) and Pc(4457)-- by the LHCb collaboration has a series of interesting consequences for hadron spectroscopy. If these hidden-charm objects are indeed hadronic molecules, as suspected, they will be constrained by heavy-flavor and SU(3)-flavor symmetries. The combination of these two symmetries will imply the existence of a series of five-flavor pentaquarks with quark content ˉbcsdu and bˉcsdu, that is, pentaquarks that contain each of the five quark flavors that hadronize. In addition, from SU(3)-flavor symmetry alone we expect the existence of light-flavor partners of the three Pc pentaquarks with strangeness S=1 and S=2. The resulting structure for the molecular pentaquarks is analogous to the light-baryon octet -- we can label the pentaquarks as PNQˉQ, PΛQˉQ, PΣQˉQ, PΞQˉQ depending on their heavy- and light-quark content (with N, Λ, Σ, Ξ the member of the light-baryon octet to which the light-quark structure resembles and Q, ˉQ the heavy quark-antiquark pair). In total we predict 45 new pentaquarks from heavy- and light-flavor symmetries alone, which extend up to 109 undiscovered states if we also consider heavy-quark spin symmetry. If an isoquartet (I=3/2) hidden-charm pentaquark is ever observed, this will in turn imply a second multiplet structure resembling the light-baryon decuplet: PΔQˉQ, PΣQˉQ, PΞQˉQ, PΩQˉQ.
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
publication: © 2022-2025 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³

Corresponding record in: Inspire


 Záznam vytvorený 2021-03-27, zmenený 2024-04-11


Fulltext from publisher:
Nahraj plný textPDF
Plný text:
Nahraj plný textPDF
  • Send to ScienceWise.info