The Large Hadron Collider (LHC) at CERN is the world’s largest and most powerful particle accelerator. The Compact Muon Solenoid (CMS) experiment, where the CIEMAT group has a broad contribution, is a general-purpose detector at the LHC and an ideal instrument for searches beyond Standard Model physics. In this seminar I will present the search for new physics processes using proton-proton collision events with final states containing an energetic electron, or muon, and apparent transverse momentum imbalance (pTmiss).
This lepton+pTmiss final state is a promising and clean experimental channel. The data collected at 13 TeV center-of-mass energy during the Run 2 period (2016+2017+2018), corresponding to a total integrated luminosity of 137 fb−1, have been analyzed. Results will be presented in a model independent way, and also on the search for new gauge bosons (W’) predicted by the Sequential Standard Model. Additionally they will be reinterpreted in the context of extra-dimensions or SUSY scenarios. In a more generic way, and following EFT approaches, deviations from the SM predictions are quantified in terms of oblique electroweak parameters and these data allow the measurement of the W parameter. All these results are complementary used to set constraints on composite Higgs scenarios.
Zoom Coordinates: https://cern.zoom.us/j/98768015328, pass 092020, pass 092020