Precision measurements on dipole moments of the tau and hadronic multi-body final states

Abstract

In the framework of precision experiments, the search for electric dipole moments and the precise determination of magnetic dipole moments (g-2) have since long been of prime interest. Hadronic decays offer the best accuracy, since only the kinematic information carried by a single neutrino per decay is lost. Thus, they reveal more easily precious information on the helicity of the initial tau lepton. However, in contrast to one- or two-body hadronic final states, the description of hadronic multi-body final states depends on the model for the hadronic current. In this work, we determine how the choice of a hadronic model impacts the extraction of tau electric and magnetic dipole moments.

Comments: Proceedings for "The 16th International Workshop on Tau Lepton Physics (TAU2021) (Virtual Edition)", from September 27th to October 1st 2021 by Indiana University; 9 pages, 4 figures