Dynamical study of the multiquark states

Diquarks may play an important role in hadronic physics particularly near the phase transitions (chiral, deconfinement points). By using vector diquark ideas in the chiral limit diquark correlations in the relativistic region and imposing HF interactions between quarks in a vector diquark, we calculate the mass of Theta pentaquark state. Also by using the tunnelling method we simultaneously calculate its decay width. Our results are in good agreement with experimental results.