  The t-channel exchange of a first generation leptoquark could contribute to
the cross-section for q q-bar to e+e-. The leptoquark is off-shell, so this
process can be sensitive to leptoquarks beyond the mass reach of pair
production searches at the LHC (currently m_{LQ}> 830 GeV). We attempt to
analytically translate ATLAS bounds on $ (\bar{q} \gamma ^\mu q) (\bar{e}
\gamma _\mu e) $ contact interactions to the various scalar leptoquarks, and
obtain a bound on their quark-lepton coupling of order $\lambda^2 \leq
(m_{LQ}/2$ TeV)$^2$. The greatest difficulty in this translation is that the
leptoquarks do not induce the contact interaction studied by ATLAS, so the
interference with the Standard Model is different. If bounds were quoted on the
functional dependance of the cross-section on s-hat, rather than on particular
contact interaction models, this difficulty in applying experimental bounds to
theoretical models could be circumvented.
