The masses of $P_{c}^{*}(4380)$ and $P_{c}^{*}(4450)$ in the quasi particle diquark model

TL;DR

This paper estimates the masses of two pentaquark states using a quasiparticle diquark model, demonstrating that this approach effectively describes their properties and provides insights into multiquark dynamics.

Contribution

It introduces a quasiparticle diquark model to accurately estimate pentaquark masses, offering a novel perspective on multiquark state dynamics.

Findings

Masses of $P_{c}^{*}(4380)$ and $P_{c}^{*}(4450)$ are well reproduced.

Quasiparticle diquark model effectively describes multiquark states.

Supports diquark as quasiparticle concept for pentaquark analysis.

Abstract

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 $(uudc\overline{c})$ have been estimated in the framework of the quasiparticle model of diquarks considering $[ud][uc]\overline{c}$ 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.