A decay of the ultra-high-energy neutrino $ν_e \to e^- W^+$ in a magnetic field and its influence on the shape of the neutrino spectrum

Details A decay of the ultra-high-energy neutrino $ν_e \to e^- W^+$ in a magnetic field and its influence on the shape of the neutrino spectrum A decay of the ultra-high-energy neutrino $ν_e \to e^- W^+$ in a magnetic field and its influence on the shape of the neutrino spectrum

2010-10-04

arxiv.org/abs/1010.0582v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, LaTeX, 2 EPS figures, based on the talk presented by A.V. Kuznetsov at the XVI International Seminar Quarks'2010, Kol

Scientific paper

The width of the neutrino decay into the electron and $W$ boson in a strong external magnetic field is obtained from the imaginary part of the neutrino self-energy. This result corrects the formulae existing in the literature. The mean free path of an ultra-high energy neutrino in a strong magnetic field is calculated. An energy cutoff for neutrinos propagating in a strong field is defined.

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