The effective neutrino charge radius in the presence of fermion masses
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The effective neutrino charge radius in the presence of fermion masses

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The effective neutrino charge radius in the presence of fermion masses

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Bernabeu Alberola, José Perfil; Binosi, Daniele; Papavassiliou, Joannis
This document is a artículoDate2005

Este documento está disponible también en : http://hdl.handle.net/10550/43248
We show how the crucial gauge cancellations leading to a physical definition of the neutrino charge radius persist in the presence of non-vanishing fermion masses. An explicit one-loop calculation demonstrates that, as happens in the massless case, the pinch technique rearrangement of the Feynman amplitudes, together with the judicious exploitation of a fundamental current relation leads to a completely gauge independent definition of the effective neutrino charge radius. Using the formalism of the Nielsen identities it is further proved that the same cancellation mechanism operates unaltered to all orders in perturbation theory.

    Bernabeu Alberola, José; Binosi, Daniele; Papavassiliou, Joannis (2005) The effective neutrino charge radius in the presence of fermion masses Nuclear Physics B 716 1-2 352 372
http://dx.doi.org/10.1016/j.nuclphysb.2005.02.039

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