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


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Aad G., Abbott B., Abdallah J., Abdelalim A., Abdesselam A., Abdinov O., ...Daha Fazla

European Physical Journal C, cilt.71, sa.10, 2011 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Kısa Makale
  • Cilt numarası: 71 Sayı: 10
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1140/epjc/s10052-011-1744-9
  • Dergi Adı: European Physical Journal C
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Ankara Üniversitesi Adresli: Evet

Özet

© CERN for the benefit of the ATLAS collaboration 2011.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.