We investigate the effects induced by excited leptons, at the one-loop level, in the anomalous magnetic and weak-magnetic form factors of the leptons. Using a general effective Lagrangian approach to describe the couplings of the excited leptons, we compute their contributions to the weak-magnetic moment of the τ lepton, which can be measured on the Z peak, and we compare it with the contributions to gμ−2, measured at low energies.
@article{arxiv.hep-ph/9609393,
title = {Compositeness Effects in the Anomalous Weak-Magnetic Moment of Leptons},
author = {M. C. Gonzalez-Garcia and S. F. Novaes},
journal= {arXiv preprint arXiv:hep-ph/9609393},
year = {2016}
}