Journal
PHYSICAL REVIEW LETTERS
Volume 123, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.092001
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Funding
- U.S. Department of Energy [DE-AC05-06OR23177, DE-FG02-87ER40365]
- U.S. National Science Foundation [PHY-1415459]
- PAPIIT-DGAPA (UNAM, Mexico) [IA101819]
- CONACYT (Mexico) [734789, 251817, A1-S-21389]
- Comunidad Autonoma de Madrid through Programa de Atraccion de Talento Investigador
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We study the nature of the new signal reported by LHCb in the J/psi p spectrum. Based on the S-matrix principles, we perform a minimum-bias analysis of the underlying reaction amplitude, focusing on the analytic properties that can be related to the microscopic origin of the P-c(4312)(+) peak. By exploring several amplitude parametrizations, we find evidence for the attractive effect of the Sigma(+)(c)(D) over bar (0) channel, which is not strong enough, however, to form a bound state.
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