Abstract
We report on a search for pair production of first-generation scalar leptoquarks (LQ) in p{bar p} collisions at {radical}s = 1.96 TeV using an integrated luminosity of 203 pb{sup -1} collected at the Fermilab Tevatron collider by the CDF experiment. We observe no evidence for LQ production in the topologies arising from LQ{ovr LQ} {yields} eqeq and LQ{ovr LQ} {yields} eq{nu}q, and derive 95% C.L. upper limits on the LQ production cross section. The results are combined with those obtained from a separately reported CDF search in the topology arising from LQ{ovr LQ} {yields} {nu}q{nu}q and 95% C.L. lower limits on the LQ mass as a function of {beta} = BR(LQ {yields} eq) are derived. The limits are 236, 205 and 145 GeV/c{sup 2} for {beta} = 1, {beta} = 0.5 and {beta} = 0.1, respectively.
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