Bounds on the Tau Magnetic Moments: Standard Model and Beyond

Details Bounds on the Tau Magnetic Moments: Standard Model and Beyond Bounds on the Tau Magnetic Moments: Standard Model and Beyond

2001-03-08

arxiv.org/abs/hep-ph/0103085v1

Nucl.Phys.Proc.Suppl. 98 (2001) 133-140

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1016/S0920-5632(01)01213-0

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.

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