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arXiv · 1312.5233

Implications of Improved Higgs Mass Calculations for Supersymmetric Models

O. Buchmueller·M. J. Dolan·J. Ellis·T. Hahn·S. Heinemeyer·W. Hollik·J. Marrouche·K. A. Olive·H. Rzehak·K. de Vries·G. Weiglein
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Abstract

We discuss the allowed parameter spaces of supersymmetric scenarios in light of improved Higgs mass predictions provided by FeynHiggs 2.10.0. The Higgs mass predictions combine Feynman-diagrammatic results with a resummation of leading and subleading logarithmic corrections from the stop/top sector, which yield a significant improvement in the region of large stop masses. Scans in the pMSSM parameter space show that, for given values of the soft supersymmetry-breaking parameters, the new logarithmic contributions beyond the two-loop order implemented in FeynHiggs tend to give larger values of the light CP-even Higgs mass, M_h, in the region of large stop masses than previous predictions that were based on a fixed-order Feynman-diagrammatic result, though the differences are generally consistent with the previous estimates of theoretical uncertainties. We re-analyze the parameter spaces of the CMSSM, NUHM1 and NUHM2, taking into account also the constraints from CMS and LHCb measurements of B_s to μ+μ- and ATLAS searches for MET events using 20/fb of LHC data at 8 TeV. Within the CMSSM, the Higgs mass constraint disfavours tan beta lesssim 10, though not in the NUHM1 or NUHM2.

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O. Buchmueller, M. J. Dolan, J. Ellis, T. Hahn, S. Heinemeyer, W. Hollik, J. Marrouche, K. A. Olive, H. Rzehak, K. de Vries, G. Weiglein. 2013-12-18. Implications of Improved Higgs Mass Calculations for Supersymmetric Models. https://doi.org/10.1140/epjc%2Fs10052-014-2809-3

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