Hunting for states in the recent LHCb di-$J/\psi$ invariant mass spectrum

Ze-Rui Liang, Xiao-Yi Wu, De-Liang Yao

Partial wave analysis is performed, with effective potentials as dynamical inputs, to scrutinize the recent LHCb data on the di-$J/\psi$ invariant mass spectrum. Coupled-channel effec…