Constraints on tan beta in the MSSM from the Upper Bound on the Mass of the Lightest Higgs boson
arXiv:hep-ph/9909540 · doi:10.1088/1126-6708/2000/06/009
Abstract
We investigate the possibilities for constraining tan beta within the MSSM by combining the theoretical result for the upper bound on the lightest Higgs-boson mass as a function of tan beta with the informations from the direct experimental search for this particle. We discuss the commonly used ``benchmark'' scenario, in which the parameter values m_top = 175 GeV and M_susy = 1 TeV are chosen, and analyze in detail the effects of varying the other SUSY parameters. We furthermore study the impact of the new diagrammatic two-loop result for mh, which leads to an increase of the upper bound on mh by several GeV, on present and future constraints on tan beta. We suggest a slight generalization of the ``benchmark'' scenario, such that the scenario contains the maximal possible values for mh(tan beta) within the MSSM for fixed m_top and M_susy. The implications of allowing values for m_top, M_susy beyond the ``benchmark'' scenario are also discussed.
11 pages, 5 figures. Minor changes, two references added. Version to appear in JHEP
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