The Maximal Mass Model and Lepton Magnetic Moment

The two-component formulation of quantum electrodynamics with fundamental mass is studied. We review and update the prediction of the primordial existence of lepton magnetic moment in framework of two component formulation of the Maximal Mass Model containing a limiting mass M , which is considered as new universal physical constant. As it well known in the Dirac theory so-called gyromagnetic factor g = 2. Quantum electrodynamics together with electro-weak theory and hadronic contributions predicts deviations from Dirac’s value. It is very important that all these effects slightly increase the g-value. But in our model we have any decreasing of this quantity g = 2 √ 1−m/M, where m is a lepton mass. The most intriguing prediction of new approach is the absolute value of this deviation increases with growth of a lepton mass. In this connection the direct experimental measurements of τ lepton anomalous magnetic moment aτ = (g − 2)/2 gain in extraordinary importance. The most stringent limit −0.052 < aτ < 0.013 at 95% confidence level, was set by the DELPHI[12] collaboration. The authors also quote their result in the form of central value and error aτ = −0.018(17). To pay attention that the sign of aτ is the negative and now we can speak about a qualitative agreement with our predictions.