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Search for squarks and gluinos using final states with jets and missing transverse momentum with the ATLAS detector in root s=7 TeV proton-proton collisions
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
University of Chicago.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 3047
2011 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 701, no 2, p. 186-203Article in journal (Refereed) Published
Abstract [en]

A search for squarks and gluinos in final states containing jets, missing transverse momentum and no electrons or muons is presented. The data were recorded by the ATLAS experiment in root s = 7 TeV proton-proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation was observed in 35 pb(-1) of analysed data. Gluino masses below 500 GeV are excluded at the 95% confidence level in simplified models containing only squarks of the first two generations, a gluino octet and a massless neutralino. The exclusion increases to 870 GeV for equal mass squarks and gluinos. In MSUGRA/CMSSM models with tan beta = 3, A(0) = 0 and mu > 0, squarks and gluinos of equal mass are excluded below 775 GeV. These are the most stringent limits to date.

Place, publisher, year, edition, pages
2011. Vol. 701, no 2, p. 186-203
Keyword [en]
Supersymmetry, Squark, Gluino, Search, LHC, ATLAS
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-41476DOI: 10.1016/j.physletb.2011.05.061ISI: 000292993900005Scopus ID: 2-s2.0-79960292068OAI: oai:DiVA.org:kth-41476DiVA, id: diva2:443957
Note
QC 20110927. Author count: 3047Available from: 2011-09-27 Created: 2011-09-27 Last updated: 2017-12-08Bibliographically approved

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Grahn, Karl-JohanLund-Jensen, BengtStrandberg, JonasLafaye, Remi
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