Study of leptoquark pair production at the LHC with the CMS detector

TL;DR

This paper evaluates the CMS detector's ability to discover scalar leptoquark pairs at the LHC, estimating mass reach limits under different branching ratios and considering pileup effects at high luminosity.

Contribution

It provides new projections for leptoquark mass exclusion limits at the LHC, including the impact of pileup and different decay branching ratios.

Findings

Maximum leptoquark mass reach is about 1.47 TeV for 100% branching ratio.

For 50% branching ratio, the upper limit is 1.2 TeV at 100 fb-1.

Pileup effects at high luminosity are analyzed.

Abstract

We study the discovery potential of the CMS detector for the scalar leptoquark pair production at the LHC. Present and future exclusion limits are considered. We find that the maximal leptoquark mass reach is about 1.47 TeV for the branching ratio of Br(LQ_l -> l q)=100 %, while for Br(LQ_l -> l q)=50 % the upper limit is 1.2 TeV for an integrated luminosity of 100 fb-1. We obtain comparable results for electron and muon-type leptoquarks. The pileup effect at high luminosity is discussed.