New look at hidden charm tetra and pentaquark states

The work presents the analysis of the hidden charm P-wave tetraquarks in the diquark model, using an e ective Hamiltonian incorporating the dominant spin–spin, spin–orbit and tensor interactions. We compare them with other P-wave systems such as P-wave charmonia and the newly discovered Ωcbaryons, analyzed recently in this framework. The experimental situation on the Y-states is not certain, therefore, by using di erent spectra a detailed discussion of the parameters related to the diquark model is presented. Using the parameters from the currently preferred Y-states pattern, we work out the spin-parity, JPC, and mass spectrum for many states in the hidden charm P-wave supermultiplet. We hope in future when there will be an experimental consensus on di erent Y-states, an observation of these new resonances would be a decisive footprint of the underlying diquark dynamics.