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A compressed spectrum is an anticipated hideout for many beyond standardmodel scenarios. Such a spectrum naturally arises in the minimal universalextra dimension framework and also in supersymmetric scenarios. Low $p_T$leptons and jets are characteristic features of such situations. Hence, amonojet with $\not E_T$ has been the conventional signal at the Large HadronCollider (LHC). However, we stress that inclusion of $p_T$-binned trackobservables from such soft objects provide very efficient discrimination of newphysics signals against various SM backgrounds. We consider two benchmarkpoints each for minimal universal extra dimension (MUED) and minimalsupersymmetric standard model (MSSM) scenarios. We perform a detailed cut-basedand multivariate analysis (MVA) to show that the new physics parameter spacecan be probed in the ongoing run of LHC at 13 TeV center-of-mass energy with anintegrated luminosity $\sim$ 20-50 fb$^{-1}$. When studied in conjunction withthe dark matter relic density constraint assuming standard cosmology, we findthat compressed MUED (with $\Lambda R=2$) can be already excluded from theexisting data. Also, MVA turns out to be a better technique than regularcut-based analysis since tracks provide uncorrelated observables which wouldextract more information from an event.

Constraining compressed versions of MUED and MSSM using soft tracks at the LHC