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arXiv · 1811.01197

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

CMS Collaboration
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Abstract

A search for the pair production of first-generation scalar leptoquarks is performed using proton-proton collision data recorded at 13 TeV center-of-mass energy with the CMS detector at the LHC. The data correspond to an integrated luminosity of 35.9 fb$^{-1}$. The leptoquarks are assumed to decay to a quark, and either an electron or a neutrino with branching fractions $\beta$ and 1$-\beta$, respectively. The search targets the decay final states comprising two electrons, or one electron and large missing transverse momentum, along with two quarks that are detected as hadronic jets. First-generation scalar leptoquarks with masses below 1435 (1270) GeV are excluded for $\beta =$ 1.0 (0.5). These are the most stringent limits on the mass of first-generation scalar leptoquarks to date. The data are also interpreted to set exclusion limits in the context of an $R$-parity violating supersymmetric model, predicting promptly decaying top squarks with a similar dielectron final state.

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CMS Collaboration. 2018-11-03. Search for pair production of first-generation scalar leptoquarks at $\sqrt{s} =$ 13 TeV. https://doi.org/10.1103/physrevd.99.052002

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