Abstract We explore the potential manifestation of a hexaquark, the H particle, as a constituent within neutron stars. The H particle, with a quark content of uuddss, is constructed within the Chromomagnetic Interaction (CMI) framework. Specifically, we contemplate the flavor-singlet state H with JP=0^+ J P = 0 +. Our computations indicate that the three-flavor hexaquark state, the H particle, possesses a lower mass of 2212. 7~MeV 2212. 7 MeV in comparison to the d^* (2380) d ∗ (2380), implying greater stability than the two-flavor d^* (2380) d ∗ (2380). The analysis involving the H particle is carried out using the relativistic mean-field (RMF) model. We investigate the influence of H particle couplings, a key factor in determining the system stability, and focus on the potential existence of H particle within neutron stars. We find that H particle could potentially endure as a stable constituent within neutron stars, and lead to a reduction of the maximum mass.
Wu et al. (Sun,) studied this question.