A Study on and Mass Pc*(4380) Pc*(4450) in the Quasi Particle Diquark Model

The masses of the recently reported by LHCb two pentaquark charmonium states P-c*(4380) and P-c*(4450) which are supposed to have the configuration (uudc (c) over bar) have been estimated in the framework of the quasiparticle model of diquarks considering [ud][uc](c) over bar configuration. The masses are reproduced very well which indicates that the description of diquark as quasiparticle is very useful for describing multiquark state and to understand the dynamics of it.