The Standard Model of particle physics remains defined by the formula SU(3) × SU(2) × U(1), despite the discovery of the Higgs boson and the observations of neutrino flavor oscillations. The Higgs mechanism does not alter this foundational structure; rather, it indicates that SU(2) × U(1) is broken to U(1) in the context of electroweak symmetry breaking. Furthermore, neutrinos, as leptons, do not adhere to the same symmetry constraints in their mixing, highlighting their unique role within the Standard Model framework.
PREREQUISITESPhysicists, students of particle physics, and researchers interested in the foundational aspects of the Standard Model and the implications of recent discoveries in neutrino physics.