Search for flavour anomalies at LHCb: decay-time-dependent CP violation in 𝑩𝒔 𝟎 → 𝑲&𝝅( 𝑲(𝝅& and Lepton Universality in 𝑩𝟎 → 𝑫(∗)&𝒍𝝂𝒍

Abstract

The Standard Model (SM) of Particle Physics is a very successful theory, but it leaves some important questions unanswered. One long-standing mystery is the so called flavour structure, consisting on the specific arrangement of fermions in three families and the connections among them. Several New Physics (NP) models predict modifications to the flavour structure and consequent deviations from the expected behaviour of sub-atomic processes. The LHCb experiment, at CERN, searches for NP by measuring the properties of B mesons decays, using B mesons produced in p-p collisions at the LHC. This thesis presents two measurements performed in LHCb that allow to test the flavour structure of the SM in different ways.