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Search for diphoton events with large missing transverse energy with 36 pb(-1) of 7 TeV proton-proton collision data with the ATLAS detector
DESY, D-2000 Hamburg, Germany .
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.
KTH, Skolan för teknikvetenskap (SCI), Fysik, Partikel- och astropartikelfysik.ORCID-id: 0000-0002-8913-0981
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Rekke forfattare: 30302011 (engelsk)Inngår i: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 71, nr 10, s. 1744-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Making use of 36 pb(-1) of proton-proton collision data at root 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 sigma < 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 sigma < 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.

sted, utgiver, år, opplag, sider
2011. Vol. 71, nr 10, s. 1744-
Emneord [en]
DYNAMICAL SUPERSYMMETRY BREAKING, UNIVERSAL EXTRA DIMENSIONS, SUPERGAUGE TRANSFORMATIONS, HADRON COLLIDERS, FORTRAN CODE, MODEL, PHENOMENOLOGY, GENERATORS, EXTENSION, PARTICLE
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Identifikatorer
URN: urn:nbn:se:kth:diva-52607DOI: 10.1140/epjc/s10052-011-1744-9ISI: 000296631800005Scopus ID: 2-s2.0-84883776840OAI: oai:DiVA.org:kth-52607DiVA, id: diva2:467204
Forskningsfinansiär
Swedish Research Council
Merknad
QC 20111219. Author count: 3030.Tilgjengelig fra: 2011-12-19 Laget: 2011-12-19 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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