Fernández Ramírez, CésarPilloni, AAlbadalejo, M.Jackura, A.Mathieu, V.Mikhasenko, M.Silva castro, J.A.Szczepaniak, A.P.2024-12-042024-12-042019-08-29Fernández-Ramírez, Pilloni, Albaladejo, Mathieu, Mikhasenko, Silva-Castro, & Szczepaniak. (2019). Interpretation of the LHCb Pc (4312)+ Signal. Physical Review Letters, 123(9). https://doi.org/10.1103/PHYSREVLETT.123.0920011079-7114, 0031-9007https://doi.org/10.1103/PhysRevLett.123.092001https://hdl.handle.net/20.500.14468/24684The registered version of this article, first published in “Physical Review Letters, 123(9)092001", is available online at the publisher's website: American Physical Society, https://doi.org/10.1103/PhysRevLett.123.092001La versión registrada de este artículo, publicado por primera vez en “Physical Review Letters, 123(9)092001", está disponible en línea en el sitio web del editor: American Physical Society, https://doi.org/10.1103/PhysRevLett.123.092001We study the nature of the new signal reported by LHCb in the 𝐽/𝜓⁢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 𝑃𝑐⁢(4312)+ peak. By exploring several amplitude parametrizations, we find evidence for the attractive effect of the Σ+𝑐⁢¯𝐷0 channel, which is not strong enough, however, to form a bound state.eninfo:eu-repo/semantics/openAccessartículo