Search for Scalar Leptoquark Pairs Decaying to Electrons and Jets in {ovr {ital p}}{ital p} Collisions

We have searched for the pair production of first generation scalar leptoquarks in the eejj channel using the full data set (123 pb{sup {minus}1}) collected with the D0 detector at the Fermilab Tevatron during 1992{endash}1996. We observe no candidates with an expected background of approximately 0.4 events. Comparing the experimental 95{percent} confidence level upper limit to theoretical calculations of the cross section with the assumption of a 100{percent} branching fraction of eq, we set a lower limit on the mass of a first generation scalar leptoquark of 225 GeV/c{sup 2}. The results of this analysis rule out the interpretation of the excess of high Q{sup 2} events at DESY HERA as leptoquarks which decay exclusively to eq. {copyright} {ital 1997} {ital The American Physical Society}