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


Aad G., Abajyan T., Abbott B., Abdallah J., Khalek S. A. , Abdelalim A. A. , ...Daha Fazla

PHYSICS LETTERS B, cilt.718, ss.411-430, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 718 Konu: 2
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.physletb.2012.10.069
  • Dergi Adı: PHYSICS LETTERS B
  • Sayfa Sayıları: ss.411-430

Özet

A search for diphoton events with large missing transverse momentum has been performed using proton-proton collision data at is root s = 7 TeV 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 Lambda 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. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.