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

CollaborationWith : Abdelalim Aly, Ahmed Aly / Alexandre, Gauthier / Backes, Moritz / Barone, Gaetano / Bell, Paul / Bell, William / Benhar Noccioli, Eleonora / Blondel, Alain / Bucci, Francesca / Clark, Allan Geoffrey / Dao, Valerio / Doglioni, Caterina / Ferrere, Didier / Gadomski, Szymon / Gonzalez Sevilla, Sergio / Goulette, Marc / Iacobucci, Giuseppe / La Rosa, Alessandro / Lister, Alison / Martin Dit Latour, Bertrand / Mermod, Philippe / Mora Herrera, Maria Clemencia Rosario / Nektarijevic, Snezana / Nikolics, Katalin / Pasztor, Arpad / Picazio, Attilio / Pohl, Martin / Rosbach, Kilian / Rosselet, Laurent / Wu, Xin
Published in Physics Letters. B. 2012, vol. 718, no. 2, p. 411-430
Abstract A search for diphoton events with large missing transverse momentum has been performed using proton–proton collision data at √s=7 TeV recorded with the ATLAS detector, corresponding to an integrated luminosity of 4.8 fb−14.8 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 TeV1/R<1.40 TeV are excluded. These limits provide the most stringent tests of these models to date.
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ATLAS COLLABORATION. Search for diphoton events with large missing transverse momentum in 7 TeV proton–proton collision data with the ATLAS detector. In: Physics Letters. B, 2012, vol. 718, n° 2, p. 411-430. https://archive-ouverte.unige.ch/unige:40009

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Deposited on : 2014-09-05

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