Mainz 2014 – scientific programme

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T: Fachverband Teilchenphysik

T 27: Supersymmetrie 2

T 27.4: Talk

Monday, March 24, 2014, 17:30–17:45, P4

Search for supersymmetry with jets, missing transverse momentum, and two or more tau leptons with the ATLAS detector — Philip Bechtle, Klaus Desch, Till Nattermann, Oliver Ricken, •Steffen Schaepe, and Martin Schultens — University of Bonn

With the ongoing non-discovery of SUSY, the focus of searches for physics beyond the Standard Model (SM) shifts more and more towards heavy partners of the third particle generation. Besides strongly interacting particles also scalar tau leptons play an important role either due to their mass or their couplings to other SUSY and SM particles. Moreover, only very few SM processes can produce final states containing multiple tau leptons and large missing energy.

The discovery of a Higgs Boson by ATLAS and CMS puts additional constraints on SUSY which have to be accounted for. In this analysis three different SUSY models are studied which employ very different approaches of how this is achieved.

In this talk, status and perspectives of the search for SUSY with final states containing two or more hadronically decaying tau leptons and no light leptons with the ATLAS detector will be presented.

A search for tau lepton events is performed in the full datasets of proton-proton collisions at √s=8  TeV recorded with the ATLAS detector. In case no excess of events will be observed above the SM prediction, 95 % confidence level upper limits will be set on the production cross section for new physics in the context of various SUSY models (GMSB, nGM, bRPV).