EPJ

2023 Impact factor 4.2
EPJ C - Particles and Fields
Particles and Fields
Eur. Phys. J. C 2, 497-502
DOI 10.1007/s100529800703

Scalar leptoquark pair production at the CERN LHC:
signal and backgrounds

B. Dion1 - L. Marleau1 - G. Simon1 - M. de Montigny2

1 Département de Physique, Université Laval, Québec QC Canada, G1K 7P4
2 Faculté Saint-Jean, University of Alberta, Edmonton AB Canada, T6C 4G9

Received: 25 March 1997 / Revised version: 23 June 1997 / Published online: 20 February 1998

Abstract
We present the results of an analysis for the pair production of scalar leptoquarks at the CERN Large Hadron Collider (LHC) with $\sqrt{s}=14$ TeV and ${\cal L}=10$ fb-1 which includes the dominant sources of Standard Model background associated to this process: $t{\bar{t}}$, ZZ, WZ and Z*jj production. The $t{\bar{t}}$ process provides the main source of background. We consider leptoquarks introduced in the framework of a superstring-inspired E6 model. The leptoquark production is found to be dominant in all regions of parameter space for leptoquark masses below 750 GeV. We establish the discovery reach of the leptoquarks at 750 GeV (1 TeV) for a branching ratio of $B(LQ\rightarrow eq)=0.5$ (B=1).

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