Search for Supersymmetry in Events with Three Leptons and Missing Transverse Momentum in sqrt(s)= 7 TeV pp Collisions with the ATLAS Detector

De Santo, Antonella and The ATLAS Collaboration, (2012) Search for Supersymmetry in Events with Three Leptons and Missing Transverse Momentum in sqrt(s)= 7 TeV pp Collisions with the ATLAS Detector. Physical Review Letters, 108 (26). pp. 261804-261822. ISSN 0031-9007

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Abstract

A search for the weak production of charginos and neutralinos decaying to a final state with three leptons (electrons or muons) and missing transverse momentum is presented. The analysis uses 2:06 fb-1 of sqrt(s)= 7 TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with standard model expectations in two signal regions that are either depleted or enriched in Z-boson decays. Upper limits at 95% confidence level are set in R-parity conserving phenomenological minimal supersymmetric and simplified models. For the simplified models, degenerate lightest chargino and next-to-lightest neutralino masses up to 300 GeV are excluded for mass differences from the lightest neutralino up to 300 GeV.

Item Type: Article
Additional Information: I established and have led for five years (2007-12) the ATLAS SUSY Multilepton physics group, which searches for supersymmetry signals in final states with three or more leptons at ATLAS. I successfully led this group to first publications using the ATLAS 2011 dataset. I was lead author of the analysis presented in this paper and one of the two editors of the paper.
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics
Depositing User: Antonella DeSanto
Date Deposited: 14 Nov 2012 14:27
Last Modified: 09 Mar 2017 21:38
URI: http://sro.sussex.ac.uk/id/eprint/42444

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