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arXiv · 1606.08912

Studying the P_c(4450) resonance in J/psi photoproduction off protons

A. N. Hiller Blin·C. Fernández-Ramírez·A. Jackura·V. Mathieu·V. I. Mokeev·A. Pilloni·A. P. Szczepaniak
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Abstract

A resonance-like structure, the P_c(4450), has recently been observed in the J/psi p spectrum by the LHCb collaboration. We discuss the feasibility of detecting this structure in J/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/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/psi production threshold and shed light on the P_c(4450) resonance in the future photoproduction measurements.

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A. N. Hiller Blin, C. Fernández-Ramírez, A. Jackura, V. Mathieu, V. I. Mokeev, A. Pilloni, A. P. Szczepaniak. 2016-06-28. Studying the P_c(4450) resonance in J/psi photoproduction off protons. https://doi.org/10.1103/physrevd.94.034002

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