Search for second generation leptoquark pairs decaying to μν+jets in pp̅ collisions at √s=1.8TeV

Abstract

We report on a search for second generation leptoquarks (LQ) produced in pp̅ collisions at √s=1.8TeV using the D0 detector at Fermilab. Second generation leptoquarks are assumed to be produced in pairs and to decay to either μ or ν and either a strange or a charm quark (q). Limits are placed on σ(pp̅ →LQLQ̅→μν+jets) as a function of the mass of the leptoquark. For equal branching ratios to μq and νq, second generation scalar leptoquarks with a mass below 160GeV/c², vector leptoquarks with anomalous minimal vector couplings with a mass below 240GeV/c², and vector leptoquarks with Yang-Mills couplings with a mass below 290GeV/c², are excluded at the 95% confidence level.