Muon signals of very light CP-odd Higgs states of the NMSSM at the LHC

We study here the mu(+) mu(-) decay mode of a very light CP-odd Higgs boson of the NMSSM, a(1), produced in association with a bottom-antibottom pair and find that, despite small event rates, a significant signal should be extractable from the SM background at the LHC with high luminosity.