Bounds on the Tau Magnetic Moments: Standard Model and Beyond

Abstract

We obtain new bounds for the magnetic dipole moments of the tau lepton. These limits on the magnetic couplings of the tau to the electroweak gauge bosons (gamma, W, Z) are set in a model independent way using the most general effective Lagrangian with the SU(2)_L x U(1)_Y symmetry. Comparison with data from the most precise experiments at high energies shows that the present limits are more stringent than the previous published ones. For the anomalous magnetic moment the bounds are, for the first time, within one order of magnitude of the standard model prediction.

8 pages, 1 figure; to appear in the proceedings of the 6th International Workshop on Tau Lepton Physics, 18-21 September (2000), Victoria (Canada)

References in corpus (4)

• Study of Fermion pair production in e+e- collisions at 130-183 GeV
• Model independent bounds on the tau lepton electromagnetic and weak magnetic moments
• Measurement of Hadron and Lepton-Pair Production at 130GeV < \sqrt{s} < 189 GeV at LEP
• Effects of anomalous charged current dipole moments of the tau on the decay ${\tau }^{-}\to {\nu }_{\tau }{\pi }^{-}{\pi }^0$

Cited by in corpus (2)

• Limits on the Electromagnetic and Weak Dipole Moments of the Tau-Lepton in E_6 Superstring Models
• Bounding the electromagnetic and weak dipole moments of the tau-lepton in a simplest little Higgs model