6533b860fe1ef96bd12c2e4b

RESEARCH PRODUCT

Studying thePc(4450)resonance inJ/ψphotoproduction off protons

Vincent MathieuVictor MokeevAdam P. SzczepaniakAdam P. SzczepaniakCésar Fernández-ramírezA. JackuraA. N. Hiller BlinA. N. Hiller BlinAlessandro Pilloni

subject

Nuclear physicsPhysicsParticle physics010308 nuclear & particles physicsBranching fraction0103 physical sciencesHigh Energy Physics::ExperimentProduction (computer science)010306 general physics01 natural sciencesResonance (particle physics)Nuclear theoryPentaquark

description

A resonancelike structure, the ${P}_{c}(4450)$, has recently been observed in the $J/\ensuremath{\psi}p$ spectrum by the LHCb Collaboration. We discuss the feasibility of detecting this structure in $J/\ensuremath{\psi}$ photoproduction in the CLAS12 experiment at JLab. We present a first estimate of the upper limit for the branching ratio of the ${P}_{c}(4450)$ to $J/\ensuremath{\psi}p$. Our estimates, which take into account the experimental resolution effects, predict that it will be possible to observe a sizable cross section close to the $J/\ensuremath{\psi}$ production threshold and shed light on the ${P}_{c}(4450)$ resonance in the future photoproduction measurements.

https://doi.org/10.1103/physrevd.94.034002