Winney, D.Fanelli, C.Pilloni, A.Fernández Ramírez, CésarBlin, A. N. HillerAlbaladejo, M.Mathieu, VincentMokeev, V. I.Szczepaniak, A. P.2023-06-172023-06-172019-08-202470-001010.1103/PhysRevD.100.034019https://hdl.handle.net/20.500.14352/12876We investigate the properties of the hidden-charm pentaquark-like resonances first observed by the LHCb Collaboration in 2015, by measuring the polarization transfer K L L between the incident photon and the outgoing proton in the exclusive photoproduction of J / ψ near threshold. We present a first estimate of the sensitivity of this observable to the pentaquark photocouplings and hadronic branching ratios, and extend our predictions to the case of the initial-state helicity correlation A L L , using a polarized target. These results serve as a benchmark for the SBS experiment at Jefferson Lab, which proposes to measure for the first time the helicity correlations A L L and K L L in J / ψ exclusive photoproduction, in order to determine the pentaquark photocouplings and branching ratios.engAtribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/journal articlehttps://doi.org/10.1103/PhysRevD.100.034019open accessFísica-Modelos matemáticos