Higgs couplings in a class of Two Higgs Doublet models with controlled flavour changing interactions

por Miguel Nebot (CFTP-IST Lisbon)

lunes 20 jul. 2015 12:00 → 13:00 Europe/Madrid

Seminar Room 1.1.1 (IFIC)

Extended scalar sectors such as Two Higgs Doublet models constitute an interesting class of extensions of the Standard Model. In general, flavour changing couplings of the neutral scalars, if not kept at bay, could constitute a serious source of concern considering the impressive body of constraints imposed by experiment. In particular, mixing of the different neutral scalar fields present in such scenarios can yield a would-be Standard Model 125 GeV scalar with (1) modified flavour conserving couplings, (2) flavour changing couplings to quarks in the up or down sector and to charged leptons. Considering LHC run I constraints and flavour data, I present an analysis of the prospects for flavour changing processes such as lepton flavour changing decays H → muon tau , Higgs decays to down quarks H → b s, b d and top decays t → H q of interest for LHC run II and future colliders.

Slides BGL-Ific-20150720.pdf