On Relativistic Corrections to Mass Spectra in Heavy Quarkonia

H. Ito
1986 Progress of theoretical physics  
It is shown that the relativistic gluon corrections for the states with j""'O are consistently included in the instantaneous ladder BS equation but the higher-order kernels may contribute to the ground states with j=O. The retardation correction is examined. The relativistic effect is shown to be essential to get the reasonable value for M(T/e).
doi:10.1143/ptp.76.567 fatcat:nbluhhalhzgtxdn6u6nxxmfzsm