We present a search for the pair production of first generation scalar leptoquarks (LQ) in data corresponding to an integrated luminosity of 5.4 fb$^{ -1}$ collected with the D0 detector at the Fermilab Tevatron Collider in ppbar collisions at $\sqrt{ s}=1.96$ TeV. In the channel $LQ \bar{ LQ} \rightarrow e\nu_e qq'$, where q, q' are u or d quarks, no significant excess of data over background is observed, and we set a 95% C.L. lower limit of 326 GeV on the leptoquark mass, assuming equal probabilities of leptoquark decays to eq and $\nu_e q'$.
Categories: hep-ex