Abstract
A compressed spectrum pose a serious challenge at LHC. Such a spectrum naturally arises in various BSM scenarios. Monojet with missing pT has been the conventional signal at the LHC. However, we stress that inclusion of $p_T$-binned track observable from such soft objects provide very efficient discrimination of new physics signals against various SM backgrounds. We perform a detailed cut-based and multivariate analysis (MVA) for two benchmark points in MUED and pMSSM scenarios to show that the parameter space of those models can be probed in the ongoing run of LHC at 13 TeV center-of-mass energy with an integrated luminosity 20-50 fb^{-1}.
24-08-2026