Search for pair production of first generation scalar leptoquarks at $\sqrt{s}=13~\mathrm{TeV}$

A search for the pair production of first generation scalar leptoquarks is performed using proton-proton collision data recorded at $13~\mathrm{TeV}$ center-of-mass energy with the CMS detector at the CERN LHC. The data correspond to an integrated luminosity of $35.9~\mathrm{fb}^{-1}$. The leptoquarks are assumed to decay to either an electron or a neutrino and a quark with branching fraction $\beta$ and $1-\beta$, respectively. The final states arising from these decays comprise two electrons, or one electron and large missing transverse momentum, and two quarks that are detected as hadronic jets. First generation scalar leptoquarks with masses below $1435~(1180)~\mathrm{TeV}$ are excluded for $\beta =~1.0~(0.5)$. These are the most stringent limits on the production of first generation scalar leptoquarks to date. The data are also interpreted to set exclusion limits in the context of a long-lived R-parity violating supersymmetry model having equivalent final states.