2011/11/30 by ATLAS Collaboration, G. Aad, B. Abbott +98
Physics and Astronomy · #Context (archaeology) #Gauge (firearms) #Gluino #High-Energy Particle Collisions Research #Minimal Supersymmetric Standard Model #Neutralino #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Physics beyond the Standard Model #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #Supersymmetry #hep-ex
paper · pdf · doi:10.1016/j.physletb.2012.02.054
published as Phys. Lett. B710 (2012) 519-537 · 8 pages plus author list (20 pages total), 6 figures, 2 tables, matches published version in Physics Letters B
openalex publication_date 2012/02/22 · arxiv created 2012/04/08 · arxiv updated 2015/03/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
A search for diphoton events with large missing transverse momentum has been performed using 1.07 fb − 1 of proton–proton collision data at s = 7 TeV recorded with the ATLAS detector. No excess of events was observed above the Standard Model prediction and 95% Confidence Level (CL) upper limits are set on the production cross section for new physics. The limits depend on each model parameter space and vary as follows: σ < ( 22 – 129 ) fb in the context of a generalised model of gauge-mediated supersymmetry breaking (GGM) with a bino-like lightest neutralino, σ < ( 27 – 91 ) fb in the context of a minimal model of gauge-mediated supersymmetry breaking (SPS8), and σ < ( 15 – 27 ) fb in the context of a specific model with one universal extra dimension (UED). A 95% CL lower limit of 805 GeV , for bino masses above 50 GeV, is set on the GGM gluino mass. Lower limits of 145 TeV and 1.23 TeV are set on the SPS8 breaking scale Λ and on the UED compactification scale 1 / R , respectively. These limits provide the most stringent tests of these models to date.