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Search for single production of scalar leptoquarks in p anti-p collisions decaying into muons and quarks with the D0 detector.

Abazov, V. M. and Bertram, Iain and Borissov, Guennadi and Fox, Harald and Ratoff, Peter and Sopczak, Andre (2007) Search for single production of scalar leptoquarks in p anti-p collisions decaying into muons and quarks with the D0 detector. Physics Letters B, 647 (2-3). pp. 74-81. ISSN 0370-2693

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Abstract

We report on a search for second generation leptoquarks (LQ2) which decay into a muon plus quark in collisions at a center-of-mass energy of 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 β 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, λ. Assuming λ=1, lower limits on the mass of a second generation scalar leptoquark coupling to a u quark and a muon are mLQ2>274 GeV and mLQ2>226 GeV for β=1 and β=1/2, respectively.

Item Type: Article
Journal or Publication Title: Physics Letters B
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 11256
Deposited By: Dr Iain Bertram
Deposited On: 12 Aug 2008 13:18
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 14:59
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/11256

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