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Search for pair production of first or second generation leptoquarks in proton-proton collisions at root s=7 TeV using the ATLAS detector at the LHC
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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2011 (English)In: Physical Review D, ISSN 1550-7998, Vol. 83, no 11, 112006- p.Article in journal (Refereed) Published
Abstract [en]

This paper describes searches for the pair production of first or second generation scalar leptoquarks using 35 pb(-1) of proton-proton collision data recorded by the ATLAS detector at root s = 7 TeV. Leptoquarks are searched in events with two oppositely-charged muons or electrons and at least two jets, and in events with one muon or electron, missing transverse momentum and at least two jets. After event selection, the observed yields are consistent with the predicted backgrounds. Leptoquark production is excluded at the 95% CL for masses M-LQ < 376 (319) GeV and M-LQ < 422 (362) GeV for first and second generation scalar leptoquarks, respectively, when assuming the branching fraction of a leptoquark to a charged lepton is equal to 1.0 (0.5).

Place, publisher, year, edition, pages
2011. Vol. 83, no 11, 112006- p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-155998DOI: 10.1103/PhysRevD.83.112006ISI: 000291658800002OAI: oai:DiVA.org:uu-155998DiVA: diva2:429649
Note
3059 more authors from the ATLAS CollaborationAvailable from: 2011-07-05 Created: 2011-07-05 Last updated: 2011-07-05Bibliographically approved

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