The possibility to observe a Higgs boson having a mass between 300 and 600 GeV and to measure its couplings to vector bosons and top quark with CMS at the LHC is studied. The different signatures: H → ZZ → l+l−l+l− H → ZZ → l+l−νν̄ H → ZZ → l+l−qq̄ H → ZZ → νν̄qq̄ H → WW → lνlν H → WW → lνqq are analyzed. The possibility to separate the Higgs events produced through weak boson fusion (qq → qqH) fro...

We study Higgs boson production via Double Pomeron Exchange allowing for the presence of Pomeron remnants. We estimate the number of events produced at the LHC collider, as a function of the Higgs boson mass and its decay channel. The model which successfully describes the high mass dijet spectrum observed at Tevatron (run I) is used to predict rates of events with tagged protons for the accept...

We study the resonance production of radions and Higgs via gluon-gluon fusion in the Randall-Sundrum model with Higgs-curvature mixing at the LHC. We find that radion can be detected both in mixed (with Higgs boson) and unmixed case if the radion vacuum expectation value Λφ is around 1 TeV. The Λφ ∼ 10 TeV case is also promising for certain values of mixing parameters and radion masses. The mix...

Precision electroweak data presently favors a weakly-coupled Higgs sector as the mechanism responsible for electroweak symmetry breaking. Low-energy supersymmetry provides a natural framework for weakly-coupled elementary scalars. In this review, we summarize the theoretical properties of the Standard Model (SM) Higgs boson and the Higgs sector of the minimal supersymmetric extension of the Sta...

Searches for Higgs bosons at LEP are summarized. No Higgs boson has been observed yet. For the Standard model Higgs boson, the lower bound on the mass is 113:3 GeV=c. In the Minimal Supersymmetric Standard Model, for representative scans of the SUSY parameters, the limits on the CPeven and the CP-odd neutral Higgs bosons masses are both 90:5 GeV=c. For the charged Higgs bosons predicted by two-...

Most recent models assuming the Higgs Boson is a pseudo-Nambu-Goldstone Boson (pNGb) are motivated by the indication from Standard Model fits that its mass is ≤ 200GeV .Starting from a modified SM. of Forshaw et. al. with a triplet boson added and a heavier Higgs Boson, we consider a pNGb model.This differs in several ways from most little Higgs models: apart from using only one loop, the cutof...

We examine in detail radiative corrections to the lightest scalar Higgs boson mass due to the top quark and scalar quark loops in the next-to-minimal supersymmetric standard model (NMSSM). We take into account the nondegenerate state for the top scalar quark masses. In our analysis, the mass matrix of the top scalar quark contains the gauge terms. Therefore our formula for the scalar Higgs boso...

The radiative corrections to the decay processes of the neutral (CP -even) Higgs boson (H) into a longitudinal gauge boson pair, i.e., H → ZLZL and H → W L W− L are analyzed in the two-Higgs doublet model by assuming that all of the Higgs boson masses are much greater than the W and Z bosons’. These calculations are motivated to see if one could see potentially large virtual effects to these de...

The possibility to observe a Higgs boson having a mass between 300 and 600 GeV and to measure its couplings to vector bosons and top quark with CMS at the LHC is studied. The different signatures: H → ZZ → l+l−l+l− H → ZZ → l+l−νν̄ H → ZZ → l+l−qq̄ H → ZZ → νν̄qq̄ H → WW → lνlν H → WW → lνqq are analyzed. The possibility to separate the Higgs events produced through weak boson fusion (qq → qqH) fro...

The prospective analyses for the search of the Standard Model (SM) Higgs boson decaying in to ZZ → 4 leptons (4e, 4μ or 2e2μ) or WW ∗ → lνlν ′ (l or l’ = e or μ) with the ATLAS and the CMS detectors at the CERN LHC pp collider are presented. Signal and background datasets obtained with a detailed Monte Carlo simulation of the detectors response are treated using a complete reconstruction chain....