Pen Phenomenologiccal study of Supersynmetric Models at colliders

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We study the possibility to explore the details of minimal supersymmetric standard models(MSSM) in future collider experiments. In MSSM particles are predicted to be produced at future colliders such as CERN large hadron collider LHC, or future e^+ e^- colliders whose center of mass energy is around I TeV.The determination of soft supersymmetry SUSY breaking parameters, or equivalently, determination of masses and mixing angle of sparticles are important to discriminate the SUSY breaking mechanism, which is the key ingredient of the model.In our papers, we discuss SUSY physics at future e^+ e^- colliders and following results are obtained and published.1. Though the precision measurement of scalar tau (tau) production and decay, one can measure the weak and GUT scale soft breaking masses of tau, tau Yukawa coupling. This determines the GUT scale interaction of tau.2. The gaugino-scalar fermion -fermion coupling g_<x-> could be measured precisely. The coupling is related to gauge coupling by SUSY, therefore serves as the ultimate test of the symmetry.3. The deviation from the SUSY relation may be identified as radiative corrections. We demonstrate that the mass of scalar quark can be determined through the measurement of the radiative correction of the g_<x->