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

A.V. Kuznetsov; A.V. Serghienko (Yaroslavl State (P.G. Demidov) University; N.V. Mikheev; Russia)

arxiv: 1010.0582 · v1 · pith:5AXGZCOPnew · submitted 2010-10-04 · ✦ hep-ph · astro-ph.HE

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.V. Kuznetsov , N.V. Mikheev , A.V. Serghienko (Yaroslavl State (P.G. Demidov) University , Russia) This is my paper

classification ✦ hep-ph astro-ph.HE

keywords neutrinofieldmagneticstrongdecayenergybosoncalculated

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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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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

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