Chair: J. Romao
Miguel Nebot (IFIC, CSIC-Univ Valencia)
Extended scalar sectors such as Two Higgs Doublet models are an interesting class of extensions of the Standard Model. Flavour changing couplings of the neutral scalars, if not tamed, may constitute a serious source of concern attending to the impressive body of existing experimental constraints. In particular, mixing of the different neutral scalar fields present in such scenarios can yield a...
Patrick Schaefers (University of Southampton)
We explore the potential of the supersymmetric version of the Pati-Salam model with $A_4 \times Z_5$ family symmetry to describe present experimental data. We demonstrate that this model, which was initially developed to describe the neutrino sector, has great potential to explain collider and non-collider measurements, such as the dark matter relic density, the Higgs boson mass and, most...
Venus Keus (University of Helsinki)
ATLAS and CMS have reported an excess in the flavor violating decay of the Higgs boson, $h \to \mu \tau$. We show that this result can be accommodated through a mixing of the Higgs with a flavon, the field responsible for generating the Yukawa matrices in the lepton sector. We employ a version of the Froggatt-Nielsen mechanism at the electroweak scale, with only the leptons and the flavon...
Victor Ilisie (IFIC, CSIC-Univ Valencia)
We study the contribution of new sets of two-loop Barr-Zee type diagrams to the anomalous magnetic moment of the muon within the two-Higgs-doublet model framework. We show that some of these contributions can be quite sizeable for a large region of the parameter space and can significantly reduce, and in some cases even explain, the discrepancy between the theoretical prediction and the...
Ye-Ling Zhou (IPPP, Durham University)
Current neutrino oscillation data suggests specific flavour structures in lepton sector which can be explained by underlying flavour symmetries. In leptonic flavour models with discrete flavour symmetries, flavons play a key role to realise these structures. They gain vacuum expectation values which respect different residual symmetries in the charged lepton and neutrino sectors and result in...