Publicação: Search for first-generation scalar leptoquarks in pp̄ collisions at √s = 1.96 TeV
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We report on a search for pair production of first-generation scalar leptoquarks (LQ) in pp̄ collisions at √s = 1.96 TeV using an integrated luminosity of 252 pb<sup>-1</sup> collected at the Fermilab Tevatron collider by the D0 detector. We observe no evidence for LQ production in the topologies arising from LQLQ → eqeq and LQLQ → eqvq, and derive 95% C.L. lower limits on the LQ mass as a function of β, where β is the branching fraction for LQ → eq. The limits are 241 and 218 GeV/c <sup>2</sup> for β = 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/c<sup>2</sup>. © 2005 The American Physical Society.
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Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 71, n. 7, p. 1-7, 2005.
