We summarize the status of Higgs boson searches at the upgraded Fermilab Tevatron performed by the DØ and CDF collaborations. We report on three categories of searches, namely the search for the Standard Model Higgs boson (pp̄ → H, WH or ZH , withH → WW ∗ and/or H → bb̄), the search for the minimal supersymmetric Higgs boson using pp̄ → hbb̄ → bb̄bb̄ and pp̄ → hX → ττX, and the search for doubly charg...

We show that radiative corrections to the Higgs potential in supersymmetric theories with large tan generically lead to large diierences in the light Higgs boson decay branching fractions compared to those of the standard model Higgs boson. In contrast, the light Higgs boson production rates are largely unaaected. We identify W h associated production followed by Higgs boson decays to photons o...

The existence of certain TeV suppressed higher-dimension operators may open up new decay channels for the Higgs boson to decay into lighter right-handed neutrinos. These channels may dominate over all other channels if the Higgs boson is light. For a Higgs boson mass larger than 2mW the new decays are subdominant yet still of interest. The right-handed neutrinos have macroscopic decay lengths a...

We compute the leading logarithmic radiative corrections to the lightest Higgs mass in the NMSSM involving the electroweak gauge couplings and the NMSSM specific Yukawa couplings λ and κ (including all mixed combinations), which are induced by chargino, neutralino and Higgs boson loops. The effect of the NMSSM specific Yukawa couplings λ and κ is to increase the upper bound on the lightest Higg...

The sensitivity of Standard Model Higgs boson searches at the Tevatron experiments with a mass 135 < MH < 190GeV/c 2 using the channel H → WW → ll/pT (l = e, μ) is discussed. Three new event selections involving Higgs in association with one or two high PT hadronic jets are discussed. Using Leading Order Matrix Elements and a conservative cut-based analysis a 95% confidence level exclusion on σ...

On a nonstandard two-parametric quantum algebra and its connections with U p,q (gl(2)) and U p,q (gl(1|1)) Abstract. A quantum algebra U p,q (ζ, H, X ±) associated with a nonstandard R-matrix with two deformation parameters(p, q) is studied and, in particular, its universal R-matrix is derived using Reshetikhin's method. Explicit construction of the (p, q)-dependent nonstandard R-matrix is obta...

The cross-section for ZZ → ZZ with arbitrarily polarized Z bosons is calculated within the electroweak Standard Model including the complete O(α) corrections. We show the numerical importance of the radiative corrections and elaborate its characteristic features. The treatment of the Higgs-boson resonance is discussed in different schemes including the S-matrix-motivated pole scheme and the bac...