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We evaluate the magnetic moment {μ}=ge{}/2m_τc of the {τ} lepton. This is interesting from a purely theoretical point of view, although an experimental measurement, though difficult, may be possible in the future. Our result, including strong- and weak-interaction contributions, which are large, is a_τ=(g-2)/2=11 773(3)×{}10^-7.
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Samuel et al. (1991) studied this question.
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