Speaker
Ewan Chin Hill
(University of Victoria (CA))
Description
A search for direct pair production of the supersymmetric partner of the top quark in events with two tau leptons has been performed using proton-proton collision data. The 20 fb$^{-1}$ of $\sqrt{s}=8$ TeV data were collected in 2012 by the ATLAS experiment at the LHC. The search is optimised for a model where both top squarks decay via a scalar tau to a nearly massless gravitino. No significant excesses from the Standard Model expectations are found. Exclusion limits at the $95\%$ confidence level are set as a function of the top squark and scalar tau masses. Depending on the scalar tau mass, lower limits between 490 GeV and 650 GeV are placed on the top squark mass within the model considered.
Author
Ewan Chin Hill
(University of Victoria (CA))
Co-authors
Bob Kowalewski
(University of Victoria (CA))
Isabel Trigger
(TRIUMF (CA))
