Lepton Universality
Abstract
Description
The Standard Model requires the three known leptonic families to have identical couplings to the gauge bosons. The present experimental tests on lepton universality are reviewed, both for the charged and neutral current sectors. Our knowledge about the Lorentz structure of the $l^-\toν_l l'^-\barν_{l'}$ transition amplitudes is also discussed.
21 pages, latex, 6 Postscript figures, Lectures at the Cargese'96 School --Masses of Fundamental Particles-- (Cargese, Corsica, 5-17 August 1996
21 pages, latex, 6 Postscript figures, Lectures at the Cargese'96 School --Masses of Fundamental Particles-- (Cargese, Corsica, 5-17 August 1996