THE 1(1)PI AND 2(1)PI TWIN STATES OF KRB REVISITED

We performed new ab initio calculations with a core-polarization-poten tial treatment of the core-valence correlation for the ground and the two first (1) Pi excited states of the KRb dimer. Contrary to a previo us result [Phys. Rev. A 51, 1929 (1995)], the potential curves obtaine d are now in perfect agreement with recent experimental studies. Howev er, it is shown that the qualitative discussion given previously remai ns valid. (C) 1997 American Institute of Physics.