Search for the Pair Production of First Generation Scalar Leptoquarks with the CMS Detector

Abstract

A search for the pair-production of first generation scalar leptoquarks is performed in final states consisting of two electrons and at least two jets or an electron, a neutrino, and at least two jets using proton-proton collision data at √s = 7 TeV. The data were collected by the Compact Muon Solenoid detector at the Large Hadron Collider in 2011 and correspond to an integrated luminosity of 4.95 fb−1. The number of observed events in both final states is observed to be in good agreement with the predictions for Standard Model processes. A 95% confidence level combined lower limit is set on the mass of a first generation scalar leptoquark at 830 and 640 GeV for β = 1 and 0.5, respectively, where β is the branching fraction of the leptoquark to an electron and a quark.