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Search for diphoton events with large missing transverse momentum in 7 TeV proton-proton collision data with the ATLAS detector

Research output: Contribution to journalArticle

Georges Aad, Bobby Acharya

Original languageEnglish
Article numberN/A
Pages (from-to)411-430
Number of pages20
JournalPhys.Lett. B
Volume718
Issue number2
DOIs
Publication statusPublished - 5 Dec 2012

King's Authors

Abstract

A search for diphoton events with large missing transverse momentum has been performed using proton–proton collision data at View the MathML source recorded with the ATLAS detector, corresponding to an integrated luminosity of 4.8 fb−1. No excess of events was observed above the Standard Model prediction and model-dependent 95% confidence level exclusion limits are set. In the context of a generalised model of gauge-mediated supersymmetry breaking with a bino-like lightest neutralino of mass above 50 GeV, gluinos (squarks) below 1.07 TeV (0.87 TeV) are excluded, while a breaking scale Λ below 196 TeV is excluded for a minimal model of gauge-mediated supersymmetry breaking. For a specific model with one universal extra dimension, compactification scales 1/R<1.40 TeV are excluded. These limits provide the most stringent tests of these models to date.

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