momentum imbalance, as inferred through the\(M_ {\mathrm {T2}}\) variable. The results are
based on a sample of proton–proton collisions collected in 2016 at a center-of-mass energy
of 13\(\,\text {TeV}\) with the CMS detector and corresponding to an integrated luminosity of
35.9\(\,\text {fb}^\text {-1}\). No excess event yield is observed above the predicted standard
model background, and the results are interpreted as exclusion limits at 95% confidence …