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Search for single production of scalar leptoquarks in p\bar{p} collisions decaying into muons and quarks with the D0 detector

D0 Collaboration·V. Abazov
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Abstract

We report on a search for second generation leptoquarks LQ_2 which decay into a muon plus quark in p\bar{p} collisions at a center-of-mass energy of sqrt{s} = 1.96 TeV in the D0 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 beta into a quark and a muon was determined for second generation scalar leptoquarks as a function of the leptoquark mass. This result has been combined with a previously published D0 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 are m{LQ_2}>274 GeV and m{LQ_2}>226 GeV for beta=1 and beta=1/2, respectively.

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D0 Collaboration, V. Abazov. 2007-03-12. Search for single production of scalar leptoquarks in p\bar{p} collisions decaying into muons and quarks with the D0 detector. https://doi.org/10.1016/j.physletb.2007.01.064

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