The standard model (SM) predicts the existence of one scalar particle, the Higgs boson (H). The Higgs boson is the only particle of the SM which has not been found until now. Electroweak precision data mainly collected at CERN LEP and SLAC SLC in combination with the direct top-quark mass measurement at the Tevatron would favour a light Higgs boson with a mass below about 200 GeV at the 95% con...

The SU(3) simplest little Higgs model in its original framework without the so-called μ term inevitably involves a massless pseudoscalar boson η, which is problematic for b -physics and cosmological axion limit. With the μ term introduced by hand, the η boson acquires mass mη ∼ μ, which can be lighter than half the Higgs boson mass in a large portion of the parameter space. In addition, the int...

We show that it is possible to construct models in which the width of the Higgs boson is arbitrary either smaller or larger than a standard model Higgs boson of the same mass. There are no new fields into which the Higgs boson decays. Instead, the coupling of the Higgs boson to the gauge bosons is adjusted. We construct and analyze weakly–coupled models with arbitrary–width Higgs bosons to inve...

We explore the capabilities for new physics discovery in proton-antiproton collisions at 5.4 TeV center-of-mass energy with luminosity 10 33 cm −2 s −1 at a Tripler upgrade of the Tevatron collider. The prospects are robust for the usual Higgs boson and supersymmetry benchmarks. With an integrated luminosity of 40 fb −1 , discoveries at 5σ could be made for a standard Higgs boson of mass < ∼ 68...

Three-loop electroweak corrections to the ρ-parameter, sin 2 θ lept eff and the W-boson mass in the large Higgs mass limit 1 A review of the calculation of the leading three-loop electroweak corrections to the ρ-parameter, sin 2 θ lept eff and the W-boson mass is presented. The heavy Higgs mass expansion and the renormalization are discussed.

Recent results obtained by the CDF and DØ collaborations are presented here. These Tevatron Higgs searches look for a Standard Model (SM) Higgs boson decaying into W-boson pairs, with the W-bosons decaying into electron-neutrino or muon neutrino final states. In the mass range of 135 GeV/c to 200 GeV/c, the SM Higgs decays prominently into W-boson pairs. The presented results are based on an in...

Caianiello’s quantum geometrical model with maximal acceleration places the upper limit μ ≤ 719.5 GeV on the mass of the Higgs boson. The model also provides an equation linking the mass of the W boson to the Higgs mass μ and independent symmetry breaking and mass generating mechanisms. These may further restrict the value of μ. PACS:03.65.Bz, 12.90, 04.90.+e

In the minimal supersymmetric Standard Model, the heaviest CP-even Higgs boson H and the CP-odd Higgs scalar A are predicted to be almost degenerate in mass at the tree level, for the wide kinematic range MA > 2MZ and tanβ ≥ 2. However, if large soft-CPviolating Yukawa interactions involving scalar quarks of the third generation are present in the theory, then the CP invariance of the Higgs pot...

The mass-generation mechanism is the most urgent problem of the modern particle physics. The discovery and study of the Higgs boson with the Large Hadron Collider at CERN are the highest priority steps to solve the problem. In this paper, the Standard Model Higgs mechanism of the elementary particle mass generation is reviewed with pedagogical details. The discussion of the Higgs quadric self-c...