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

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arxiv 1606.08912 v1 pith:AGXC4BGC submitted 2016-06-28 hep-ph hep-exnucl-th

A. N. Hiller Blin , C. Fernández-Ramírez , A. Jackura , V. Mathieu , V. I. Mokeev , A. Pilloni , A. P. Szczepaniak This is my paper · ORCID
classification hep-phhep-exnucl-th
keywords photoproductionresonancestructureaccountbeenbranchingclas12close
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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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