Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 17: Beyond the Standard Model (Theorie) 4
T 17.6: Vortrag
Mittwoch, 6. März 2013, 18:00–18:15, WIL-A124
Resummation predictions for supersymmetric electroweak particles — Benjamin Fuks1, Michael Klasen2, David R. Lamprea2, and •Marcel Rothering2 — 1Institut Pluridisciplinaire Hubert Curien/Département Recherches Subatomiques, Université de Strasbourg — 2Institut für Theoretische Physik, Westfälische Wilhelms-Universität Münster
Since the discovery of a particle consistent with the properties of the Standard Model Higgs the experimentalists’ effort of ATLAS and CMS at the LHC has been shifted towards the production of electroweak supersymmetric particles.
In our work we have updated the resummation results for gauginos and sleptons with next-to-leading logarithmic accuracy matched to next-to-leading order computations for a center of mass energy of 8 TeV. We have used benchmark points for minimal supergravity breaking scenarios which are recently adopted by the experimental collaborations and motivated by the magnetic moment of the muon. Tables of total cross sections including scale and parton distribution function uncertainties are presented together with invariant mass and transverse momentum distributions. As expected, the resummation results reduce the scale dependence and ensure the convergence in the small transverse momentum region. The production of the lightest chargino with the next-to-lightest neutralino leads to the largest cross section of O(10 fb) for masses of a few hundred GeV. Due to the considered mixing in the third generation of sleptons the τ1 τ1* production cross section can also reach the fb-region for the same benchmark point. The gauginos would give rise to the largest cross section and are probably soon accessible at the LHC being the first detected supersymmetric particles.