The ATLAS discovery potential for MSSM neutral Higgs bosons decaying to a $\mu^+ \mu^-$ pair in the mass range up 130 GeV

Results are presented on the discovery potential for MSSM neutral Higgs bosons in the Mh-max scenario. The region of large tan beta, between 15 and 50, and mass between ~ 95 and 130 GeV is considered in the framework of the ATLAS experiment at the Large Hadron Collider (LHC), for a centre-of-mass energy root(s)= 14 TeV. This parameter region is not fully covered by the present data either from LEP or from Tevatron. The h/A bosons, supposed to be very close in mass in that region, are studied in the channel h/A -> mu+mu- accompanied by two b-jets. The study includes a method to control the most copious background, Zo -> mu+mu- accompanied by two b-jets. A possible contribution of the H boson to the signal is also considered.