On the pentaquark candidates $P_c^+(4380)$ and $P_c^+(4450)$ within the soliton picture of baryons

TL;DR

This paper explores the possibility of explaining the LHCb pentaquark candidates as bound states within a soliton model of baryons, incorporating heavy quark symmetry to match observed properties.

Contribution

It introduces a bound state soliton model for baryons that accounts for hidden charm pentaquarks, aligning theoretical predictions with experimental findings.

Findings

Bound state soliton model can produce pentaquark states matching LHCb candidates.

Heavy quark symmetry constrains the properties of these pentaquark states.

The model suggests these pentaquarks are quasi-bound $ar D$-soliton states.

Abstract

Using the bound state version of the topological soliton model for the baryons we show that the existence of a bound (or quasi-bound) $\bar D$-soliton state leads to the possibility of having hidden charm pentaquarks with quantum numbers and masses, which are compatible with those of the candidates recently reported by the LHCb experiment. The implications of heavy quark symmetry are elaborated.