Abstract
We have searched for the pair production of first generation scalar leptoquarks in the channel using the full data set 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 of , we set a lower limit on the mass of a first generation scalar leptoquark of . The results of this analysis rule out the interpretation of the excess of high events at DESY HERA as leptoquarks which decay exclusively to .
- Received 21 July 1997
DOI:https://doi.org/10.1103/PhysRevLett.79.4321
©1997 American Physical Society