Second Generation Leptoquark Search in p\bar{p} Collisions at $\sqrt{s}$ = 1.8 TeV

Abstract

We report on a search for second generation leptoquarks with the DØ detector at the Fermilab Tevatron $p\bar{p}$ collider at $\sqrt{s}$ = 1.8 TeV. This search is based on 12.7 pb${}^{-1}$ of data. Second generation leptoquarks are assumed to be produced in pairs and to decay into a muon and quark with branching ratio $\beta$ or to neutrino and quark with branching ratio $(1-\beta )$. We obtain cross section times branching ratio limits as a function of leptoquark mass and set a lower limit on the leptoquark mass of 111 GeV/c${}^2$ for $\beta =1$ and 89 GeV/c${}^2$ for $\beta =0.5$ at the 95%\ confidence level.

18 pages, FERMILAB-PUB-95/185-E