The Standard Model (SM) has been very successful in describing the properties of elementary particles and their interactions. However, we know that it is the low-energy limit of a more fundamental theory. Among the unknowns that SM cannot explain are the value of the mass of the particles, the mixing angles, the matter-antimatter asymmetry, the nature of neutrinos and dark matter.
The branch of physics that studies the possible extensions of the SM is known as physics beyond. of the Standard Model (BSM). At IFUNAM there is an active group dedicated to studying SM extensions. Research in this area ranges from very high energy models, such as string theory or Grand Unification theories, to low energy models, such as some multi-Higgs models. Among the topics studied are: symmetries and flavor physics, supersymmetry, string theory, Grand Unification and finite theories, multi-Higgs models, neutrino physics, violation CP number, lepton number violation, and precision measurements. Associated with BSM physics are astroparticle physics and cosmology with topics such as dark matter, barium and leptogenesis, dark energy and inflation. Most of the studies combine more than one of the above topics and emphasis is placed on comparison with experimental results. There are also theoretical-experimental collaborations, particularly on the topics of neutrino physics, dark matter, and dark energy.
