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.