The group is engaged in the study of properties of heavy beauty quarks. Beauty quark provide a unique telescope into the early universe: through their manifold decays, they allow the measurement of many fundamental parametres of the Standard Model of particle physics and the search for new physics phenomena. The research group is one of the leading places in the world in the experimental and phenomenological study of semileptonic and leptonic decays of beauty hadrons. This line of research we carry out with the japanese Belle and Belle II experiments. In addition, we are searching for feebly interacting particles (FIPs) with the FASER experiment at CERN.