Electromagnetic properties of massive neutrinos |
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Authors: | A. A. Dobrynina N. V. Mikheev E. N. Narynskaya |
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Affiliation: | 1. Demidov Yaroslavl State University, Sovetskaya ul. 14, Yaroslavl, 150000, Russia
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Abstract: | The vertex function for a virtual massive neutrino is calculated in the limit of soft real photons. A method based on employing the neutrino self-energy operator in a weak external electromagnetic field in the approximation linear in the field is developed in order to render this calculation of the vertex function convenient. It is shown that the electric charge and the electric dipole moment of the real neutrino are zero; only the magnetic moment is nonzero for massive neutrinos. A fourth-generation heavy neutrino of mass not less than half of the Z-boson mass is considered as a massive neutrino. |
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