Journal
PHYSICAL REVIEW D
Volume 97, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.97.034006
Keywords
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Funding
- Japan Society for the Promotion of Science (JSPS) [JP25247036, JP15K17641, JP16K05366]
- Grants-in-Aid for Scientific Research [17K05435, 15K17641, 25247036] Funding Source: KAKEN
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One type of hidden charm pentaquark P-cs with quark content c (c) over bar uds in light-flavor singlet state is studied in the quark model. This state is analogous to the P-c with c (c) over bar uds in light-flavor octet, which was observed in LHC in 2015. Considering various combinations of color, spin, and light flavor as internal quantum numbers in P-cs, we investigate the mass ordering of the P-cs's by adopting both the one-gluon exchange interaction and the instanton-induced interaction in the quark model. The most stable configuration of P-cs is identified to be total spin 1/2 in which the c (c) over bar uds is combined to be color octet and spin 1, while the uds cluster is in a color octet state. The other color octet configurations, the total spin 1/2 state with the c (c) over bar spin 0, and the state with total spin 3/2 and c (c) over bar spin 1, are found as excited states. We also discuss possible decay modes of these hidden charm pentaquarks.
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