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The masses of the recently reported by LHCb two pentaquark charmonium states P * (4380) and P * (4450) which are supposed to have the configuration ( uudc c ) have been estimated in the framework of the quasiparticle model of diquarks considering [ ud ][ uc ] c 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.
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