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

G. Aad...[et al.], B. Abbott, J. Abdallah, Mogens Dam, Jørgen Beck Hansen, Jørn Dines Hansen, John Renner Hansen, Peter Henrik Hansen, Esben Bryndt Klinkby, Morten Dam Jørgensen, Troels Christian Petersen, Stefania Xella, Nele Maria Philomena Boelaert, Thomas Høvring Kittelmann

16 Citationer (Scopus)

Abstract

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.

OriginalsprogEngelsk
TidsskriftEuropean Physical Journal C
Vol/bind71
Udgave nummer10
Sider (fra-til)1744
ISSN1434-6044
DOI
StatusUdgivet - 1 okt. 2011

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