TRYING TO CATCH THE ELUSIVE A(0) AND MORE - REACTIONS INITIATED BY B-QUARKS AND THE HIGGS SECTOR OF THE MSSM

We study the cross sections for the production of a neutral, intermedi ate mass Higgs boson in the processes pp --> tq'Phi, pp --> tW(-)Phi a nd pp --> bZ(0) Phi in the Minimal Supersymmetric Standard Model (Phi = H-0, h(0) and A(0)) at Supercollider energies. The additional heavy particles (t, W, Z) in the final state can be used for tagging purpose s, increasing the signal to background ratio. These reactions are domi nated by bq and bg fusion. Their relevance for Higgs particle searches is discussed taking into account the expected efficiencies and puriti es for b-tagging. We find that, for tan beta = 30, the cross sections for pp --> bZ(0) Phi are larger than 14 pb, over the whole intemediate range of M(A)(0), for A(0) and at least one of the other two Higgses. Therefore this reaction is an excellent candidate for the discovery o f one or more MSSM Higgs particles.