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Search for diphoton events with large missing transverse momentum in 7 TeV proton-proton collision data with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2909
2012 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 718, no 2, 411-430 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2012. Vol. 718, no 2, 411-430 p.
Keyword [en]
Dynamical Supersymmetry Breaking, Universal Extra Dimensions, Supergauge Transformations, Hadron Colliders, Fortran Code, Model, Particle, Phenomenology, Generators, Extension
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-118069DOI: 10.1016/j.physletb.2012.10.069ISI: 000312687700016Scopus ID: 2-s2.0-84869872204OAI: oai:DiVA.org:kth-118069DiVA: diva2:604481
Funder
Swedish Research Council
Note

QC 20130211.  Author count: 2909

Available from: 2013-02-11 Created: 2013-02-11 Last updated: 2017-12-06Bibliographically approved

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Strandberg, Jonas

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