Person:
Mathieu, Vincent

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First Name
Vincent
Last Name
Mathieu
URI
https://hdl.handle.net/20.500.14352/87042
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Físicas
Department
Física Teórica
Area
Física Teórica
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End date: 2023 × Subject: 53 ×

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    Interpretation of the LHCb P-c (4312)(+) Signal
    (Physical review letters, 2019) Fernández Ramírez, C.; Pilloni, A.; Albaladejo, M.; Jackura, A.; Mathieu, Vincent; Mikhasenko, M.; Silva Castro, J. A.; Szczepaniak, A. P.
    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.