A reduction in the UHE neutrino flux due to neutrino spin precession期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

A reduction in the UHE neutrino flux due to neutrino spin precession

Authors:	J. Barranco O.G. Miranda C.A. Moura A. Parada

Affiliation:	1. División de Ciencias e Ingenierías, Universidad de Guanajuato, Campus León, C.P. 37150, León, Guanajuato, Mexico;2. Departamento de Física, Centro de Investigación y de Estudios Avanzados del IPN, Apdo. Postal 14-740 07000, México, D.F., Mexico;3. Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adélia, 166, 09210-170, Santo André, SP, Brazil

Abstract:	Motivated by the stringent flux limits for UHE neutrinos coming from gamma ray bursts or active galactic nuclei, we explore the possibility that the active neutrinos generated in such astrophysical objects could oscillate to sterile right handed states due to a neutrino magnetic moment _μ_ν $μ_{ν}$ . We find that a value as small as _μ_ν≈10⁻¹⁵_μ_B $μ_{ν} \approx 10^{- 15} μ_{B}$ could produce such a transition thanks to the intense magnetic fields that are expected in these objects.

Keywords:	Cosmic rays Neutrinos Neutrino electromagnetic properties
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