Combined Limits on First Generation Leptoquarks from the CDF and D0 Experiments

TL;DR

This paper combines results from CDF and D0 experiments to establish the most stringent lower mass limit of 242 GeV on first-generation scalar leptoquarks, assuming they decay exclusively into electron-quark pairs.

Contribution

It provides a combined analysis of two major collider experiments to set the tightest mass limits on first-generation scalar leptoquarks to date.

Findings

Combined limit on leptoquark mass is 242 GeV.

Individual experiment limits are 213 GeV and 225 GeV.

Most stringent limit on first-generation scalar leptoquarks to date.

Abstract

We have combined recently published leptoquark results from the CDF and D0 Collaborations which yielded 95% CL lower limits on the first generation scalar leptoquark mass of 213 GeV and 225 GeV, respectively, under assumption of 100% branching fraction of the leptoquark decay into the eq channel. The combined limit from the two experiments is 242 GeV. This is the most stringent limit on the first generation scalar leptoquark mass to date.