Search for displaced vertexes arising from decays of new, heavy particles in 7 TeV pp collisions in ATLAS

TL;DR

This paper reports a search for long-lived neutralinos decaying into charged particles and muons, using early 7 TeV proton-proton collision data from the ATLAS detector at the LHC.

Contribution

It introduces a novel search for displaced vertices from neutralino decays in early LHC data, focusing on a specific decay signature.

Findings

No significant excess observed over background

Set limits on neutralino production cross-section

Demonstrated feasibility of displaced vertex searches at LHC

Abstract

We present the results of a search for neutralinos decaying at a significant distance from their production point into charged hadrons and a high momentum muon, forming displaced vertexes. The analysis was performed with 33 pb^-1 of pp collision data collected by the ATLAS experiment at the LHC in 2010 at sqrt{s}= 7 TeV. The poster will show some highlights of the analysis.