Power meets precision to explore the symmetric Higgs portal

Exploring the Higgs portal

Non-linear Higgs portal to Dark Matter

The Higgs portal to scalar Dark Matter is considered in the context of nonlinearly realised electroweak symmetry breaking. We determine the dominant interactions of gauge bosons and the physical Higgs particle h to a scalar singlet Dark Matter candidate. Phenomenological consequences are also studied in detail, including the possibility of distinguishing this scenario from the standard Higgs po...

The Higgs as a Portal to Plasmon-like Unparticle Excitations

A renormalizable coupling between the Higgs and a scalar unparticle operator OU of non-integer dimension dU < 2 triggers, after electroweak symmetry breaking, an infrared divergent vacuum expectation value for OU . Such IR divergence should be tamed before any phenomenological implications of the Higgs-unparticle interplay can be drawn. In this paper we present a novel mechanism to cure that IR...

Precision Electroweak Parameters and the Higgs Mass

The status of various precisely measured electroweak parameters is reviewed. Natural relations among them are shown to constrain the Higgs mass,mH , via quantum loop effects to relatively low values. A comparison with direct Higgs searches is made. FUNDAMENTAL PARAMETERS AND PRECISION MEASUREMENTS The SU(2)L×U(1)Y electroweak sector of the standard model contains 17 or more fundamental paramete...

Symmetric Chern-simons-higgs Vortices

We prove the existence of radially symmetric vortices of the static nonselfdual Chern-Simons-Higgs equations with and without magnetic field in dimension 2. The vortex profiles are shown to be monotonically increasing and bounded. For a given vorticity n, when there is no magnetic field we prove that the n-vortices are stable for n = 0,±1.