Search for direct chargino production in anomaly-mediated supersymmetry breaking models based on a disappearing-track signature in $pp$ collisions at $\\sqrts=7$ TeV with the ATLAS detector
Journal
JHEP
Journal Volume
01
Pages
131
Date Issued
2013
Author(s)
Aad, Georges
Abstract
AbstractA search for direct chargino production in anomaly-mediated supersymmetry breaking scenarios is performed inppcollisions at$ \sqrt{s}=7\;\mathrm{TeV} $using 4.7 fb?1of data collected with the ATLAS experiment at the LHC. In these models, the lightest chargino is predicted to have a lifetime long enough to be detected in the tracking detectors of collider experiments. This analysis explores such models by searching for chargino decays that result in tracks with few associated hits in the outer region of the tracking system. The transverse-momentum spectrum of candidate tracks is found to be consistent with the expectation from the Standard Model background processes and constraints on chargino properties are obtained.
Type
journal article