Search for diphoton events with large missing transverse energy with 36 pb(-1) of 7 TeV proton-proton collision data with the ATLAS detector
Number of Authors: 3030
2011 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 71, no 10, 1744- p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2011. Vol. 71, no 10, 1744- p.
DYNAMICAL SUPERSYMMETRY BREAKING, UNIVERSAL EXTRA DIMENSIONS, SUPERGAUGE TRANSFORMATIONS, HADRON COLLIDERS, FORTRAN CODE, MODEL, PHENOMENOLOGY, GENERATORS, EXTENSION, PARTICLE
IdentifiersURN: urn:nbn:se:kth:diva-52607DOI: 10.1140/epjc/s10052-011-1744-9ISI: 000296631800005ScopusID: 2-s2.0-84883776840OAI: oai:DiVA.org:kth-52607DiVA: diva2:467204
FunderSwedish Research Council
QC 20111219. Author count: 3030.2011-12-192011-12-192012-02-14Bibliographically approved