Hadron Collisions Super Qcd Corrections On The Super-higgs Particle Process

The Standard Model (SM) of elementary particle physics has been proved to be a remarkable successful description of high energy physics phenomena. Almost all the Standard Model particles have been discovered by experiments except the Higgs boson. To search for Higgs bosnon and explore the electroweak symmetry breaking mechanism is one of the most important missions of future high energy experiments. The Fermilab Tevatron is presently the highest energy running colliding machine in the world. The CERN Large Hadron Collider(LHC), with s^1/2 = 14TeV and a luminosity of 100fb^-1 will be a wonderful machine for discovering Higgs boson and new physics. Both Tevatron and LHC are hadron colliders.Dispite the tremendous success, the Standard Model is generally regarded as a " low-energy " effective theory which may have to be modified at TeV energies. The most attractive extension of the SM is the Minimal Supersymmetric Standard Model (MSSM). The MSSM predicts five physical Higgs bosons: two CP-even neutral Higgs bosons h⁰, H⁰, a pseudoscalar Higgs boson A⁰ and a pair of charged Higgs boson H^± . The thoretical bound on the lighter h⁰ mass is 150 GeV including the two loop radiative corrections. The lighter h⁰ boson cannot escape detection at the LHC and in large areas of the parameter space more than one Higgs boson can be found at the LHC.Since Higgs boson production at hadron colliders involves strongly interaction, the next-to-leading order (NLO) QCD corrections are expected to be important and are crucial in order to reduce the dependence of the cross sections on the renormalization and factorization scales. Besides the SM-like QCD corrections, additional SUSY-QCD corrections must be taken into account in the MSSM. In this thesis, I will dicuss the NLO QCD corrections to several important Higgs production processes at hadron colliders.At hadron colliders, Higgs bosons associated with heavy bottom and top quarks may play an important role in the MSSM, not only for the searching of Higgs bosons, but also for the studying of Yukawa couplings. In the MSSM, due to the couplings of the Higgs boson to bottom quarks with large values of tan β, the Higgs boson production associated with bottom quarks can be dominant. The presence of a high pT bottom quark in the...