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Search for single production of scalar leptoquarks in p(p)over-bar collisions decaying into muons and quarks with the D0 detector
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2007 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 647, no 2-3, 74-81 p.Article in journal (Refereed) Published
Abstract [en]

We 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.
Keyword [en]
PAIR PRODUCTION, CONSTRAINTS, TEV
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:kth:diva-35517DOI: 10.1016/j.physletb.2007.01.064ISI: 000245743700003Scopus ID: 2-s2.0-33947281497OAI: oai:DiVA.org:kth-35517DiVA: diva2:428926
Note
QC 20110701Available from: 2011-07-01 Created: 2011-07-01 Last updated: 2012-02-02Bibliographically approved

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Strandberg, Jonas

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