The effective neutrino charge radius
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The effective neutrino charge radius

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The effective neutrino charge radius

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Papavassiliou, Joannis; Bernabeu Alberola, José Perfil; Binosi, Daniele; Vidal Perona, Jorge Perfil
Aquest document és un/a article, creat/da en: 2004

Este documento está disponible también en : http://dx.doi.org/10.1140/epjcd/s2003-03-920-7
It is shown that at one-loop order a neutrino charge radius (NCR) may be defined, which is ultraviolet finite, does not depend on the gauge-fixing parameter, nor on properties of the target other than its electric charge. This is accomplished through the systematic decomposition of physical amplitudes into effective self-energies, vertices, and boxes, which separately respect electroweak gauge invariance. In this way the NCR stems solely from an effective proper photon-neutrino one-loop vertex, which satisfies a naive, QED-like Ward identity. The NCR so defined may be extracted from experiment, at least in principle, by expressing a set of experimental electron-neutrino cross-sections in terms of the finite NCR and two additional gauge- and renormalization-group-invariant quantities, corresponding to the electroweak effective charge and mixing angle.

    Papavassiliou, Joannis; Bernabeu Alberola, José; Binosi, J.; Vidal Perona, Jorge (2004) The effective neutrino charge European Physical Journal C 33 S01 865 867
http://dx.doi.org/10.1140/epjcd/s2003-03-920-7
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