Higgs couplings in noncommutative Standard Model

→ tt̄H with Non - standard Higgs Boson Couplings

Noncommutative Standard Model : Model Building

A noncommutative version of the usual electro-weak theory is constructed. We discuss how to overcome the two major problems: 1) although we can have noncommuta-tive U (n) (which we denote by U ⋆ (n)) gauge theory we cannot have noncommutative SU (n) and 2) the charges in noncommutative QED are quantized to just 0, ±1. We show how the problem with charge quantization, as well as with the gauge g...

Standard Model Higgs Searches

The status and perspectives of Standard Model Higgs searches are discussed.

Can the Couplings in the Fermion-Higgs Sector of the Standard Model be Strong?

We present results for the renormalized quartic self-coupling λR and the Yukawa coupling yR in a lattice fermion-Higgs model with two SU(2)L doublets, mostly for large values of the bare couplings. One-component (‘reduced’) staggered fermions are used in a numerical simulation with the Hybrid Monte Carlo algorithm. The fermion and Higgs masses and the renormalized scalar field expectation value...

Radiatively Induced Neutrino Masses and Large Higgs-Neutrino Couplings in the Standard Model with Majorana Fields

The Higgs sector of the Standard Model (SM) with one right-handed neutrino per family is systematically analyzed. In a model with intergenerational independent mixings between families, we can account for very light neutrinos acquiring Majorana masses radiatively at the first electroweak loop level. We also find that in such a scenario the Higgs coupling to the light–heavy neutrinos and to the ...