Implications of LHC search results on the W boson mass prediction in the MSSM
Abstract
We present the currently most precise W boson mass (MW) prediction in the Minimal Supersymmetric Standard Model (MSSM) and discuss how it is affected by recent results from the LHC. The evaluation includes the full one-loop result and all known higher order corrections of SM and SUSY type. We show the MSSM prediction in the MW-mt plane, taking into account constraints from Higgs and SUSY searches. We point out that even if stops and sbottoms are heavy, relatively large SUSY contributions to MW are possible if either charginos, neutralinos or sleptons are light. In particular we analyze the effect on the MW prediction of the Higgs signal at about 125.6 GeV, which within the MSSM can in principle be interpreted as the light or the heavy CP-even Higgs boson. For both interpretations the predicted MSSM region for MW is in good agreement with the experimental measurement. We furthermore discuss the impact of possible future LHC results in the stop sector on the MW prediction, considering both the cases of improved limits and of the detection of a scalar top quark.