from 31 May 2021 to 4 June 2021
Mexico/General timezone
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Charm meson and baryon spectroscopy (including exotica)

Interpretation of the LHCb Pc(4312) signal


  • Mr. Jorge Antonio SILVA CASTRO

Primary authors



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 Pc(4312)+ peak. By exploring several amplitude parameterizations, we find evidence for the attractive effect of the $Σ_c^+ \overline{D^0}$ channel, that is not strong enough, however, to form a bound state.