Implications of improved Higgs mass calculations for supersymmetric models

作者：Buchmueller O^*; Dolan M J; Ellis J; Hahn T; Heinemeyer S; Hollik W; Marrouche J; Olive K A; Rzehak H; de Vries K J; Weiglein G

来源：European Physical Journal C, 2014, 74(3): 2809.

DOI：10.1140/epjc/s10052-014-2809-3

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-analyse the parameter spaces of the CMSSM, NUHM1 and NUHM2, taking into account also the constraints from CMS and LHCb measurements of BR(B-s -> mu(+)mu(-)) and ATLAS searches for (E) over bar (T) events using 20/fb of LHC data at 8 TeV. Within the CMSSM, the Higgs mass constraint disfavours tan beta less than or similar to 10, though not in the NUHM1 or NUHM2.

• 出版日期2014-3-18