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Search for diphoton events with large missing transverse momentum in 7 TeV proton–proton collision data with the ATLAS detector
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ATLAS Collaboration (Including: Farrington, Sinead and Jones, G. (Graham)). (2012) Search for diphoton events with large missing transverse momentum in 7 TeV proton–proton collision data with the ATLAS detector. Physics Letters B, Volume 718 (Number 2). pp. 411-430. doi:10.1016/j.physletb.2012.10.069 ISSN 0370-2693.
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Official URL: http://dx.doi.org/10.1016/j.physletb.2012.10.069
Abstract
A search for diphoton events with large missing transverse momentum has been performed using proton–proton collision data at 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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