Sala Seminarios IFIC (Edf. Institutos de Investigación)
Sala Seminarios IFIC
Edf. Institutos de Investigación
Descripción
Heavy quarkonium decays can be used to search for New Physics beyond the Standard Model. In particular, a light Higgs boson could induce a slight (but observable) lepton universality breaking in Upsilon leptonic decays. Actually, current exp data from CLEO seem to point out to this direction. Moreover, LEP constraints on a light Higgs mass can in fact be evaded by different models (like MSSM with a CPV Higgs sector). We also will consider spectroscopic consequences stemming from a possible mixing between Higgs and quarkonium states (eventually) leading to discrepancies with the SM expectations (e.g. hyperfine splittings). Finally, a roadmap for the discovery of such a light Higgs particle (if it exists) will be shown.