Search For First Generation Scalar Leptoquarks In P Anti P Collisions At S**1 2
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Search for First-generation Scalar Leptoquarks in P Anti-p Collisions at S**1/2
The authors report on a search for pair production of first-generation scalar leptoquarks (LQ) in p{bar p} collisions at √s = 1.96 TeV using an integrated luminosity of 252 pb−1 collected at the Fermilab Tevatron collider by the D0 detector. They observe no evidence for LQ production in the topologies arising from LQ{ovr LQ} → eqeq and LQ{ovr LQ} → eqvq, and derive 95% C.L. lower limits on the LQ mass as a function of [beta], where [beta] is the branching fraction for LQ → eq. The limits are 241 and 218 GeV/c2 for [beta] = 1 and 0.5, respectively. These results are combined with those obtained by D0 at √s = 1.8 TeV, which increases these LQ mass limits to 256 and 234 GeV/c2.