Electric and Magnetic Tau Dipole Moments Revisited

TL;DR

This paper reviews the current theoretical predictions and experimental measurements of the tau lepton's electric and magnetic dipole moments, highlighting the challenges and recent progress in testing the Standard Model and beyond.

Contribution

It provides a comprehensive overview of tau dipole moment measurements and theoretical predictions, emphasizing recent developments and ongoing challenges.

Findings

Current measurements are consistent with Standard Model predictions.

Experimental challenges due to tau's short lifetime are significant.

Recent theoretical models offer refined predictions for tau dipole moments.

Abstract

Precise measurements of magnetic and electric dipole moments are important tests of the Standard Model and beyond Standard Model physics, particularly for the electron and the muon. However, the situation presents distinctive challenges when dealing with the tau lepton due to its very short lifetime and relatively high mass. Here, we review the theoretical predictions and experimental measurements of both the anomalous magnetic and electric dipole moments of the tau lepton. Note: Contribution to the proceedings of the 17th International Workshop on Tau Lepton Physics, Louisville, USA, 4-8 December 2023