Search for single production of scalar leptoquarks in pp¯ collisions decaying into muons and quarks with the D0 detector

Document Type

Article

Publication Date

2007

Abstract

We report on a search for second generation leptoquarks (LQ2) which decay into a muon plus quark in pp¯ collisions at a center-of-mass energy of 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 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.

Comments

Published as: Abazov, V. M., Abbott, B., Abolins, M., Acharya, B. S., Adams, M., Adams, T., … Zverev, E. G. (2007). Search for single production of scalar leptoquarks in pp¯ collisions decaying into muons and quarks with the D0 detector. Physics Letters B, 647(2–3), 74–81. https://doi.org/10.1016/j.physletb.2007.01.064

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