Fully heavy pentaquark states in constituent quark model

TL;DR

This paper systematically investigates the possibility of fully heavy pentaquark states using a constituent quark model, concluding that no stable states are likely to exist.

Contribution

It provides a comprehensive analysis of all configurations of fully heavy pentaquarks within the constituent quark model, a novel systematic study in this area.

Findings

No stable fully heavy pentaquark states found

Analyzed quark configurations and mass contributions

Provided insights for future experimental searches

Abstract

The LHCb collaboration reported a fully charmed tetraquark state X(6900) in the invariant mass spectrum of $J/\psi$ pairs in 2020. This discovery inspires us to further study the fully heavy pentaquark system. In this work, we investigate systematically all possible configurations for ground fully heavy pentaquark system via the variational method in the constituent quark model. According to our calculations, we further analyze the relative lengths between quarks and the contributions to the pentaquark masses from different terms of the Hamiltonian. We think no stable states exist in fully heavy pentaquark system. We hope that our study will be helpful to explore for fully heavy pentaquark states.