Search for new physics in the final state of boosted vector bosons and missing transverse momentum in CMS experiment at the LHC.

A large community within the Compact Muon Solenoid (CMS) experiment are searching for new physics beyond the Standard model (SM). The reason behind this is how to solve several drawbacks of the SM, a major one of which being the hierarchy problem, which is related to the stability of the Higgs boson mass. Supersymmetry (SUSY) is one among many candidate models, which can resolve lots of open problems in physics. Our interest is to probe a simplified two-parameter SUSY model, where the SUSY particles decay to the final state of highly Lorentz-boosted Z bosons and missing transverse momentum. The search utilizes widecone jets to identify quark pairs from Z boson decays. Backgrounds from SM processes are suppressed by placing suitable requirements on the jet mass and missing transverse momentum. We have analyzed the full Run-2 proton-proton collision data recorded at centre-ofmass energy 13 TeV by CMS experiment, corresponding to an integrated luminosity of 137 fb-1. No significant excess in the event yield is observed beyond the number of background events expected from the SM. An exclusion limit on the mass of gluinos (supersymmetric partners of gluons) as large as 1920 GeV is set at 95% confidence level. This talk will provide a glimpse of the above analysis and a brief report on our detector performance study involving the CMS hadron calorimeter.