Search for diphoton events with large missing transverse energy with 36 pb-1 of 7 TeV proton-proton collision data with the ATLAS detector

Journal article

Making use of 36 pb-1 of proton-proton collision data at √s =7 TeV, the ATLAS Collaboration has performed a search for diphoton events with large missing transverse energy. Observing no excess of events above the Standard Model prediction, a 95% Confidence Level (CL) upper limit is set on the cross section for new physics of σ<0.38-0.65 pb in the context of a generalised model of gauge-mediated supersymmetry breaking (GGM) with a bino-like lightest neutralino, and of σ<0.18-0.23 pb in the context of a specific model with one universal extra dimension (UED). A 95% CL lower limit of 560 GeV, for bino masses above 50 GeV, is set on the GGM gluino mass, while a lower limit of 1/R>961 GeV is set on the UED compactification radius R. These limits provide the most stringent tests of these models to date. © 2011 CERN for the benefit of the ATLAS collaboration.

Authors: Aad, G; Abbott, B; Abdallah, J; Abdelalim, A; Abdesselam, A

• Journal: European Physical Journal C
• Volume: 71
• Issue: 10
• Pages: 1-21
• Publication date: 2011-10-01
• DOI: 10.1140/epjc/s10052-011-1744-9
• EISSN: 1434-6052
• ISSN: 1434-6044
• Language: English