I shall discuss the decays of the Higgs boson into lepton pairs in the left-right symmetric model. $h \rightarrow ee, e\mu, e\tau, \mu\tau$ decays will be shown to be in the observable range. There is an intricate connection of these decays with the structure of the neutrino mass, which will be outlined.
Recent years have seen a plethora of indications of deviations from the SM. Most notables among these are LUV in charge as well as in neutral current processes, in the muon (g – 2) and last but not least in the direct CP violation parameter (eps’). In this talk three issues regarding these anomalies will be discussed. First a careful critique and reservation of the status of each anomaly will...
We examine the cosmological constraints on models in which the Standard Model Higgs Yukawa couplings depend on a new scalar field, the so-called flavon. Production of flavons and their subsequent decay in the early universe pose two threats to standard cosmology: they may spoil the successful predictions from primordial nucleosynthesis (BBN), or they may dilute the primordial baryon asymmetry...
The magnetic moment of a quantum mechanical particle with an angular momentum differs from that of a classical mechanical particle by a factor called the g-factor. For Dirac particles such as electrons, muons, etc., the Dirac theory predicts the g-factor to be 2. There are slight variations from g=2 for these particles because of quantum fluctuations. The anomaly is characterized by the...
We analyze prospects for probing A × V parity-odd interactions of muons with quarks, $G(\bar \mu \gamma_\alpha \gamma_5 \mu)(\bar q\gamma^\alpha q)$, using the muon beam experiments at low and medium energy. While this operator is readily induced in the SM by Z-exchange, exotic models with sub-weak scale force mediator (Z$’$) can have an enhancement of this operator by up to two orders of...
Many new physics scenarios beyond the Standard Model often necessitate the existence of a (light) neutral scalar $H$, which might couple to the charged leptons in a flavor violating way, while evading all existing constraints. Such scalars could be effectively produced at future lepton colliders like CEPC, ILC, FCC-ee and CLIC, either on-shell or off-shell, and induce lepton flavor violating...
In this work we propose a new renormalizable SU(5)-GUT model which explains the origin of neutrino mass via a two-loop neutrino mass mechanism. We construct a viable model where gauge coupling unification is realized that simultaneously satisfies the proton decay constraints. In addition to correctly reproducing the Standard Model charged fermion masses and mixings, in this renormalizable...
