F. Abe et al., SEARCH FOR 3RD-GENERATION LEPTOQUARKS IN (P)OVER-BAR-P COLLISIONS AT ROOT-S=1.8 TEV, Physical review letters, 78(15), 1997, pp. 2906-2911
We present the results of a search for third generation leptoquark (LQ
) pairs in 110 +/- 8 pb(-1) of (p) over bar p collisions at root s = 1
.8 TeV recorded by the Collider Detector at Fermilab. We assume third
generation leptoquarks decay to a tau lepton and a b quark with branch
ing ratio beta. We observe one candidate event, consistent with standa
rd model background expectations. We place upper limits on sigma((p) o
ver bar p --> LQ(<(LQ)over bar>).beta(2) as a function of the leptoqua
rk mass M(LQ). We exclude at 95% confidence level scalar leptoquarks w
ith M(LQ) < 99 GeV/c(2), gauge vector leptoquarks with M(LQ) < 225 GeV
/c(2), and nongauge vector leptoquarks with M(LQ) < 170 GeV/c(2) for b
eta = 1.