Journal ArticleDOI
Strongly interacting Higgs bosons
Thomas Appelquist,Claude Bernard +1 more
TLDR
In this article, the sensitivity of present-energy weak interactions to a strongly interacting heavy-Higgs-boson sector is discussed, and the effects are found to be small, of the order of the square of the gauge coupling times logarithms (but not powers) of the Higgs boson mass divided by the W mass.Abstract:
The sensitivity of present-energy weak interactions to a strongly interacting heavy-Higgs-boson sector is discussed. The gauged nonlinear sigma model, which is the limit of the linear model as the Higgs-boson mass goes to infinity, is used to organize and catalogue all possible heavy-Higgs-boson effects. As long as the SU(2)/sub L/ x SU(2)/sub R/ symmetry of the Higgs sector is preserved, these effects are found to be small, of the order of the square of the gauge coupling times logarithms (but not powers) of the Higgs-boson mass divided by the W mass. We work in the context of a simplified model with gauge group SU(2)/sub L/; the extension to SU(2)/sub L/ x U(1) is briefly discussed.read more
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Event generation with SHERPA 1.1
Tanju Gleisberg,Stefan Höche,Frank Krauss,Marek Schönherr,Steffen Schumann,Frank Siegert,J. Winter +6 more
TL;DR: Sherpa as mentioned in this paper is a general-purpose tool for the simulation of particle collisions at high-energy colliders and contains a very flexible tree-level matrix-element generator for the calculation of hard scattering processes within the Standard Model and various new physics models.
Journal ArticleDOI
Event generation with SHERPA 1.1
T. Gleisberg,Stefan Hoeche,Frank Krauss,Marek Schoenherr,Steffen Schumann,Frank Siegert,J. Winter +6 more
TL;DR: Sherpa as discussed by the authors is a general-purpose tool for the simulation of particle collisions at high-energy colliders and contains a very flexible tree-level matrix-element generator for the calculation of hard scattering processes within the Standard Model and various new physics models.
Journal ArticleDOI
The anatomy of electroweak symmetry breaking: Tome I: The Higgs boson in the Standard Model
TL;DR: In this paper, the authors focused on the mechanism of electroweak symmetry breaking and the fundamental properties of the Higgs particle of the Standard Model and its decay modes and production mechanisms at hadron colliders and at future lepton colliders.
Journal ArticleDOI
Nonlinear Realization and Hidden Local Symmetries
TL;DR: The idea of dynamical gauge bosons of hidden local symmetries in nonlinear sigma models is reviewed in this article, where it is shown that any nonlinear Sigma model based on the manifold G/H is gauge equivalent to a linear model possessing a Gglobal × Hlocal symmetry, Hlocal being a hidden local symmetry.
Journal ArticleDOI
Gravity with a dynamical preferred frame
Ted Jacobson,David Mattingly +1 more
TL;DR: In this article, a general covariant model of the aether was studied, in which local Lorentz invariance is broken by a dynamical unit timelike vector field.