From PψN and PψsΛ to

Abstract

We investigate the interactions of (c¯q)(c¯q)/(ccq)(c¯q)/(ccq)(ccq) dihadron systems based on a contact Lagrangian possessing the SU(3) flavor and SU(2) spin symmetries. Under the assumptions of two scenarios for the JP quantum numbers of PψN(4440) and PψN(4457) states, we obtain the parameters (g˜s, g˜a) introduced from this contact Lagrangian. Then we include the SU(3) breaking effect by introducing a factor gx, this quantity can be constrained by the experimental mass of PψsΛ(4338) state. We can reproduce the mass of Tccf(3875) state with the parameters extracted from the observed PψN states, the fairly good description of the masses of the observed PψN/PψsΛ/Tccf states motivates us to investigate the possible molecular candidates in the T¯ccf/PψcΛ/HΩccccΛ systems within the same framework. Then we proceed to discuss the existences of T¯ccs¯θ/PψcsN/HΩccccsN states by investigating the SU(3) breaking effects. Our results show that the states in the T¯ccs¯θ/PψcsN systems can hardly form bound states, while the states in the HΩccccsN system can form bound states due to their larger reduced masses. Published by the American Physical Society 2024