Jul 4 – 11, 2012
Melbourne Convention and Exhibition Centre
Australia/Melbourne timezone
ICHEP2012 - 36th International Conference for High Energy Physics

Constrained Supersymmetry after two years of LHC data: a global view with Fittino

Jul 5, 2012, 2:15 PM
Plenary 3 (Melbourne Convention and Exhibition Centre)

Plenary 3

Melbourne Convention and Exhibition Centre

Melbourne Australia
Parallel Sessions Track 2 - Beyond the Standard Model - SUSY TR2 - Plenary 3 - Beyond the Standard Model - SUSY


Dr Xavier Prudent (Technische Universität Dresden)


We perform global fits to the parameters of the Constrained Minimal Supersymmetric Standard Model (CMSSM) and to a variant with non-universal Higgs masses (NUHM1). In addition to constraints from low-energy precision observables and the cosmological dark matter density, we take into account the LHC exclusions from searches in jets plus missing transverse energy signatures with about 5\,fb$^{-1}$ of integrated luminosity. We also include the most recent upper bound on the branching ratio $B_s\to\mu\mu$ from LHCb. Furthermore, constraints from and implications for direct and indirect dark matter searches are discussed. The best fit of the CMSSM prefers a light Higgs boson just above the experimentally excluded mass. We find that the description of the low-energy observables, $(g-2)_{\mu}$ in particular, and the non-observation of SUSY at the LHC become more and more incompatible within the CMSSM. A potential SM-like Higgs boson with mass around 126 GeV can barely be accommodated. Values for ${\cal B}(B_s\to\mu\mu)$ just around the Standard Model prediction are naturally expected in the best fit region. The most-preferred region is not yet affected by limits on direct WIMP searches, but the next generation of experiments will probe this region. Finally, we discuss implications from fine-tuning for the best fit regions.

Primary authors

Bjorn Sarrazin (Deutsches Elektronen-Synchrotron (DE)) Carsten Hensel (Georg-August-Universitaet Goettingen (DE)) Prof. Herbert Dreiner (University of Bonn) Klaus Desch (Universitaet Bonn (DE)) Mathias Uhlenbrock (Universitaet Bonn (DE)) Matthias Hamer (Georg-August-Universitaet Goettingen (DE)) Michael Kramer (Institut f. Theoretische Physik (E)-Rheinisch-Westfaelische Tec) Nelly Nguyen (University of Hamburg) Peter Wienemann (University of Bonn) Philip Bechtle (Deutsches Elektronen-Synchrotron (DE)) Torsten Bringmann (Hamburg University) Werner Porod (Uni. Würzburg) Dr Xavier Prudent (Technische Universität Dresden)

Presentation materials