2023•arXiv (Cornell University)Open access

Ratios of Hidden-Charm Compact Pentaquark Decay Widths in Quark-Diquark Model

Alexandra Dobrynina, A. Ya. Parkhomenko, A. Zinchenko

Abstract

A number of resonances comparable with a hypothesis of hidden-charm pentaquark is observed by the LHCb Collaboration. We interpret these narrow resonances as compact hidden-charm diquark-diquark-antiquark systems. Within this assumption, an interplay between the charmonium and open-charm modes is considered. Ratios of such modes for non-strange pentaquarks are obtained and discussed.

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Key concepts: Pentaquark, Diquark, Charm (quantum number), Particle physics, Physics, Charm quark, Quark, Nuclear physics