In this work we present a new computation of the lepton flavor violating (LFV) Higgs boson decays within the context of low-scale seesaw models, concretely the inverse seesaw model with three $\nu_R$ and three extra singlets $X$. The novelty of our computation is that it uses the mass insertion approximation (MIA) which works with the electroweak interaction states. This method also allows us...
I will discuss the Zee model, a radiative neutrino mass model with possible large lepton flavor violating Higgs (HLFV) decays, in particular $h\rightarrow \tau \mu$. In the first part I will analyse the effective operators responsible for HLFV and their tree level UV completions, based on arXiv:1605.06091. By imposing constraints from charged lepton flavour violating observables, like $\tau...
I will present a simple extension of the Standard Model which adds a new scale at 10^11 GeV, solving the strong CP problem with an axion and the smallness of neutrino masses via a variant of the see-saw mechanism. This leads to a dark matter candidate (the axion), and explanation of the matter/anti-matter asymmetry of the Universe (through leptogenesis) and the identity of the inflaton. The...
I will review recent work on a supersymmetric trinification model, where the standard trinification gauge group $[ \mathrm{SU}(3)_{\mathrm{L}} \times \mathrm{SU}(3)_{\mathrm{R}} \times \mathrm{SU}(3)_{\mathrm{C}}] \times \mathbb{Z}_3 \subset \mathrm{E}_6$ is supplemented by a global $\mathrm{SU}(3)_{\mathrm{F}}$ family symmetry. The chiral super field content of the model is taken from the...
We explore the phenomenological constraints of models with non-holomorphic soft SUSY breaking terms in a beyond the MSSM scenario having identical particle content. The model referred as NHSSM shows various promising features like the possibility of a strong reduction in electroweak fine-tuning even for a scenario of a heavy higgsino type of LSP, a fact that is unavailable in pMSSM models. The...
Exclusion of several classes of models due to LHC and astroparticle data has revived interest in grand unification. We consider SO(10) unified models with D-parity due to their success in incorporating light neutrino masses. We study various patterns of symmetry and supersymmetry breaking therein. Formation of topological defects in these models can alter the nature of phase transitions,...
