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- Title
Study of Hidden-Charm and Hidden-Bottom Pentaquark Resonances in the Quark Model.
- Authors
Zhu, Xinmei; Wu, Yuheng; Huang, Hongxia; Ping, Jialun; Yang, Youchang
- Abstract
Inspired by the LHCb observation of hidden-charm pentaquarks, i.e., P c (4312) , P c (4440) , and P c (4457) in the J / ψ p invariant mass spectrum, a calculation of the J / ψ p scattering cross-section was performed using the quark-delocalization color screening model. The results show that P c (4312) can be identified as a hidden-charm molecular state Σ c D with J P = 1 2 − . The two-peak structure can be reproduced around 4450 MeV, which corresponds to P c (4440) and P c (4457) . They are the resonances molecular states Σ c D * of J P = 1 2 − and J P = 3 2 − . Moreover, the Σ c * D * of both J P = 1 2 − and J P = 3 2 − are possible molecular pentaquarks. Moreover, in the same theoretical frame, the calculation is extended to the P c -like molecular pentaquarks, denoted as P b . Several hidden-bottom pentaquarks with masses above 11 GeV and narrow widths were obtained. All of these heavy pentaquarks are worth exploring in future experiments.
- Subjects
PENTAQUARK; RESONANCE; MASS spectrometry; QUARK models
- Publication
Universe (2218-1997), 2023, Vol 9, Issue 6, p265
- ISSN
2218-1997
- Publication type
Article
- DOI
10.3390/universe9060265