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Andre Rouge

Publications and source records attributed to Andre Rouge.

5 recordsLinked to original sources
arXiv2005

CP violation in a light Higgs boson decay from tau-spin correlations at a linear collider

We present a new method to measure the transverse spin correlation in the $H\toτ^+τ^-$ decay. The method has been devised to be insensitive to the beamstrahlung which affects the definition of the beam energy at a linear collider. In the case of two $τ\toπ^ν$ decays, using the anticipated detector performance of the TESLA project, we get a promising estimation of the error expected on the measurement of a CP violating phase.

hep-ex↗
arXiv2003

Isospin relation for the tau decay modes

Since the fifties, isospin relations have been used in particle physics to understand the properties of multihadrons final states. In the case of the tau lepton, they allow to relate the partial widths of the decay modes to the cross sections of e+e- annihilations. A pedagogical introduction to the construction of isospin states for meson systems and an updated review of the use of isospin relations in the study of the tau lepton are presented.

hep-ph↗
arXiv2000

Tau lepton Michel parameters and new physics

A complete discussion of the constraints on the Michel parameters and the ambiguities of their interpretation is presented. Estimators of new physics, optimized for a very wide class of hypotheses and models, are proposed.

hep-ph↗
arXiv1997

Isospin constraints on the $τ\to K\bar Knπν$ decay mode

The construction of the complete isospin relations and inequalities between the possible charge configurations of a $τ\to K\bar Knπν$ decay mode is presented. Detailed applications to the cases of two and three pions are given.

hep-ph↗