Status of effective potential calculations

Details Status of effective potential calculations Status of effective potential calculations

1995-09-25

arxiv.org/abs/hep-ph/9509385v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, latex + psfig.sty, 6 figures uuencoded. Based on talk given at the SUSY-95 International Workshop on Supersymmetry a

Scientific paper

We review various effective potential methods which have been useful to compute the Higgs mass spectrum and couplings of the minimal supersymmetric standard model. We compare results where all-loop next-to-leading-log corrections are resummed by the renormalization group, with those where just the leading-log corrections are kept. Pole masses are obtained from running masses by addition of convenient self-energy diagrams. Approximate analytical expressions are worked out, providing an excellent approximation to the numerical results which include all next-to-leading-log terms. An appropriate treatment of squark decoupling allows to consider large values of the stop and/or sbottom mixing parameters and thus fix a reliable upper bound on the mass of the lightest CP-even Higgs boson mass.

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