Search for Scalar Leptoquark Pairs Decaying to Electrons and Jets in pbarp Collisions

Details Search for Scalar Leptoquark Pairs Decaying to Electrons and Jets in pbarp Collisions Search for Scalar Leptoquark Pairs Decaying to Electrons and Jets in pbarp Collisions

1997-07-21

arxiv.org/abs/hep-ex/9707033v1

Phys.Rev.Lett.79:4321-4326,1997

Physics

High Energy Physics

High Energy Physics - Experiment

Ten pages, including five figures, submitted to PRL

Scientific paper

10.1103/PhysRevLett.79.4321

We have searched for the pair production of first generation scalar leptoquarks in the eejj channel using the full data set (123 pb-1) collected with the D0 detector at the Fermilab Tevatron during 1992--1996. We observe no candidates with an expected background of approximately 0.4 events. Comparing the experimental 95% confidence level upper limit to theoretical calculations of the cross section with the assumption of a 100% branching fraction to eq, we set a lower limit on the mass of a first generation scalar leptoquark of 225 GeV/c^2. The results of this analysis rule out the interpretation of the excess of high Q^2 events at HERA as leptoquarks which decay exclusively to eq.

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