4 papers
Motion of a scalar field coupled to a Yang Mills field reformulated locally with some gauge invariant variables
Eric Chopin
This paper exposes a reformulation of some gauge theories in terms of explicitly gauge-invariant variables. We show in the case of Scalar QED that the classical theory can be refor…
Improvement of the Calculation of Scattering Amplitudes with External Fermions
E. Chopin
In this paper, we present an improvement of a method for computing scattering amplitudes that include external (polarized) fermions with the following features: the formulas are qu…
Double Higgs Production at the Linear Colliders and the Probing of the Higgs Self-Coupling
F. Boudjema, E. Chopin
We study double Higgs production in the and modes of the linear collider. It is also shown how one can probe the scalar potential in these reactions. We discuss the…
New Physics with three-photon events at LEP
M. Baillargeon, F. Boudjema, E. Chopin +1
The effect of the most general \z3gt vertex in the reaction $e^+e^- \ra 3γ$ is studied with a particular attention to LEP searches. We give exact analytical expressions including r…