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ISSN - 02177323, Modern Physics Letters A, 2007, vol. 22, p. 159-179

Theory of the τ lepton anomalous magnetic moment

Eidelman S., Passera M.

This paper reviews and updates the Standard Model prediction of the τ lepton g -2. Updated QED and electroweak contributions are presented, together with new values of the leading-order hadronic term, based on the recent low energy e+e- data from BaBar, CMD-2, KLOE and SND, and hadronic light-by-light contribution. The total prediction is confronted to the available experimental bounds on the τ lepton anomaly, and prospects for its future measurements are briefly discussed. © World Scientific Publishing Company.