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The European Physical Journal C
ISSN: 1434-6044 (printed version)
ISSN: 1434-6052 (electronic version)
Abstract Volume 2 Issue 3 (1998) pp 497-502
DOI 10.1007/s100529800703
theoretical physics:
Scalar leptoquark pair production at the CERN LHC: signal and backgrounds
B. Dion (1), L. Marleau (1), G. Simon (1), M. de Montigny (2)
(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 $E_6$ 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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Online publication: April 25, 1998
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