Corrections to Higgs-boson-mass sum rules from the sfermion sector of a supersymmetric model

Abstract

We consider the minimal supersymmetric extension of the standard model, and compute the corrections to Higgs-boson-mass sum rules that are possibly sensitive to the large mass of the sfermion sector and/or to large trilinear Higgs-boson-sfermion-sfermion Yukawa couplings. We demonstrate that when the parameters are chosen so that corrections to the electroweak $\rho$ are within experimental limits, large corrections to the mass sum rules arise only in certain extreme regions of parameter space, corresponding to very large ratios for squark masses.