Decay widths of Di-mesonic molecular states as candidates for Zc and Zb

Recently significant progress in experimental investigations of tetraquark states has been achieved in a series of exciting experiments BELLE, BES-III, CLEO etc. which provides challenge to theory due to puzzling internal structure of tetraquark states. It is argued that it would be possible to solve this puzzle by examining their decay rates and thereby knowing the working of strong force that confines quarks together inside the hadronic state. The exotic tetraquark states with charm and bottom flavor may open a new approach to study the finite density QCD matter because of the mass scales of charm and bottom hadrons. In this work, we compute the binding energy of the Di-mesons by considering a residual strong interaction of the Coulomb plus Woods-Saxon type. Further, we predict the two body strong decay widths, Zc → y(ns)+ p , Zc → r+ hc of Z + and Zb → i(ns)+ p of Z + based on the phenomenological lagrangian field theory.