Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 50: Supersymmetrie 1

T 50.5: Vortrag

Montag, 4. März 2013, 12:00–12:15, GER-038

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 shifts more and more towards heavy partners of the third particle generation. Besides strongly interacting particles also staus play an important role either due to their mass or their couplings to other SUSY and Standard Model particles. Moreover, only very few Standard Model processes can produce final states containing multiple taus and large missing energy.

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

A search for tau events is performed in the full datasets of proton-proton collisions at √s=7  TeV recorded with the ATLAS detector. No excess of events is observed above the Standard Model prediction and 95 % confidence level upper limits are set on the production cross section for new physics in the context of a minimal model of gauge-mediated SUSY breaking (GMSB).

Refined and extended searches in the √s=8  TeV sample recorded in 2012 focusing on strong production but also targeting direct electroweak production are currently being finalized. An update on analysis and trigger strategies for these searches will be discussed.