Search for electroweak production of charginos and neutralinos in proton-proton collisions at sqrt(s)=13 TeV

A direct search for electroweak production of charginos and neutralinos is presented. Events with three or more leptons, with up to two hadronically decaying $\tau$ leptons, or two leptons of the same charge are analyzed. The data sample consists of $137~\mathrm{fb}^{-1}$ of proton-proton collisions recorded with the CMS detector at the LHC. The results are interpreted in terms of several simplified models approximating a broad range of production and decay scenarios for charginos and neutralinos. A parametric neural network is used to target several of the models suffering from large backgrounds, while a search using orthogonal search regions is provided for all the models, simplifying alternative theoretical interpretations of the results. Depending on the model hypotheses, chargino and neutralino masses between $1450~\mathrm{GeV}$ and $300~\mathrm{GeV}$ are excluded at $95\%$ confidence level.