Mass of the neutron star PSR J1614-2230

We attempted to determine the possible models for the neutron star PSR J1614-2230 in the framework of the relativistic mean field theory considering the baryon octet. It was found that the maximum mass of the neutron star will increase as the x(omega) increases, with the x(rho Lambda), x(rho Sigma), x(rho Xi), and the x(sigma) being fixed. By successively adopting the approximate methods, we can obtain four of the possible models: (i) x(sigma) = 0.33 and x(omega) = 0.6964, (ii) x(sigma) = 0.4 and x(omega) = 0.7435, (iii) x(sigma) = 0.5 and x(omega) = 0.8106, and (iv) x(sigma) = 0.6 and x(omega) = 0.8772. Here, the hyperon coupling constants x(rho) are x(rho Lambda) = 0, x(rho Sigma) = 2, x(rho Xi) = 1, and the nucleon coupling constants are chosen as GL97. Further, the possible value range of x(sigma) and x(omega), which corresponds to the mass of the neutron star PSR J1614-2230, is also determined through the four values of hyperon coupling constants determined in this paper. Our results may prove that the hadronic theory model can describe the mass of the neutron star PSR J1614-2230.