# Search for first-generation scalar leptoquarks in $p\bar p$ collisions at $sqrt{s}$ = 1.96 TeV

Abstract : We report on a search for pair production of first-generation scalar leptoquarks (LQ) in ppbar collisions at sqrt(s)=1.96 TeV using an integrated luminosity of 252pb-1 collected at the Fermilab Tevatron collider by the D0 detector. We observe no evidence for LQ production in the topologies arising from LQLQbar->eqeq and LQLQbar->eqnuq, 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 sqrt(s)=1.8 TeV, which increases these LQ mass limits to 256 and 234 GeV/c2.
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Journal articles

http://hal.in2p3.fr/in2p3-00023534
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Submitted on : Monday, January 10, 2005 - 11:11:50 AM
Last modification on : Friday, September 10, 2021 - 1:50:06 PM

### Citation

V.M. Abazov, B. Abbott, M. Abolins, B.S. Acharya, M. Adams, et al.. Search for first-generation scalar leptoquarks in $p\bar p$ collisions at $sqrt{s}$ = 1.96 TeV. Physical Review D, American Physical Society, 2005, 71, pp.071104-1-071104-7. ⟨10.1103/PhysRevD.71.071104⟩. ⟨in2p3-00023534⟩

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