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Search for Single Production of Scalar Leptoquarks in $p-ar{p}$ Collisions Decaying into Muons and Quarks with the D0 Detector
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
2007 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 647, no 2-3, 74-81 p.Article in journal (Refereed) Published
Abstract [en]

lWe report on a search for second generation leptoquarks (LQ(2)) which decay into a muon plus quark in (p) over barp collisions at a center-of-mass energy of root s = 1.96 TeV in the DO detector using an integrated luminosity of about 300 pb(-1). No evidence for a leptoquark signal is observed and an upper bound on the product of the cross section for single leptoquark production times branching fraction into a quark and a muon was determined for second generation scalar leptoquaiks as a function of the leptoquark mass. This result has been combined with a previously published DO search for leptoquark pair production to obtain leptoquark mass limits as a function of the leptoquark-muon-quark coupling, lambda. Assuming lambda = 1, lower limits on the mass of a second generation scalar leptoquark coupling to a u quark and a muon are m(LQ2) > 274 GeV and m(LQ2) > 226 GeV for beta = 1 and beta = 1/2, respectively.

Place, publisher, year, edition, pages
2007. Vol. 647, no 2-3, 74-81 p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:su:diva-12399DOI: 10.1016/j.physletb.2007.01.064ISI: 000245743700003OAI: oai:DiVA.org:su-12399DiVA: diva2:178919
Note
authorCount :571 D0 Collaboration: VAvailable from: 2008-01-15 Created: 2008-01-15 Last updated: 2017-12-13Bibliographically approved

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Åsman, BarbroClément, ChristopheStrandberg, Sara
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