Orateur
Description
The first part of my thesis is dedicated to the search for a low-mass resonance around 95 GeV in the di-photon channel with the CMS experiment. In addition to the search, I will also present an update of the S-method for the extraction of the photon energy scale calibration with Z → µ+µ−γ events.
The second part is focused on the electroweak (EW) precision test of specific
BSM theories for future colliders. To begin, I will introduce the concept of electroweak radiative corrections and present the results I obtained in the case of an SU(5) asymptotic Grand Unified Theory. By this means, I will able to introduce a Python package that I created to handle specific integrals that emerge from loop calculations. I will then switch to two other BSM models in which I started to perform EW precision tests, one with Vector Like Quarks and one with a composite Higgs.