Massive relic neutrinos in the galactic halo and the knee in the cosmic ray spectrum

Despite many efforts to find a reasonable explanation, the origin of the ”knee” in the cosmic ray spectrum at E ≈ 100<sup>15.5</sup> eV remains mysterious. In this letter we suggest that the ”knee” may be due to a GZK-like effect of cosmic rays interacting with massive neutrinos in the g...

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Autores principales: Dova, María Teresa, Epele, Luis Nicolás, Swain, J. D.
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2001
Materias:
Ciencias Exactas
Física
Radiación Cósmica
Halo galáctico
Partículas elementales
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/81975
http://arxiv.org/abs/astro-ph/0112191v1
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-81975
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
Radiación Cósmica
Halo galáctico
Partículas elementales
spellingShingle Ciencias Exactas
Física
Radiación Cósmica
Halo galáctico
Partículas elementales
Dova, María Teresa
Epele, Luis Nicolás
Swain, J. D.
Massive relic neutrinos in the galactic halo and the knee in the cosmic ray spectrum
topic_facet Ciencias Exactas
Física
Radiación Cósmica
Halo galáctico
Partículas elementales
description Despite many efforts to find a reasonable explanation, the origin of the ”knee” in the cosmic ray spectrum at E ≈ 100<sup>15.5</sup> eV remains mysterious. In this letter we suggest that the ”knee” may be due to a GZK-like effect of cosmic rays interacting with massive neutrinos in the galactic halo. Simple kinematics connects the location of the ”knee” with the mass of the neutrinos, and, while the required interaction cross section is larger than that predicted by the Standard Model, it can be accommodated by a small neutrino magnetic dipole moment. The values for the neutrino parameters obtained from the analysis of existing experimental data are compatible with present laboratory bounds.
format Articulo
Preprint
author Dova, María Teresa
Epele, Luis Nicolás
Swain, J. D.
author_facet Dova, María Teresa
Epele, Luis Nicolás
Swain, J. D.
author_sort Dova, María Teresa
title Massive relic neutrinos in the galactic halo and the knee in the cosmic ray spectrum
title_short Massive relic neutrinos in the galactic halo and the knee in the cosmic ray spectrum
title_full Massive relic neutrinos in the galactic halo and the knee in the cosmic ray spectrum
title_fullStr Massive relic neutrinos in the galactic halo and the knee in the cosmic ray spectrum
title_full_unstemmed Massive relic neutrinos in the galactic halo and the knee in the cosmic ray spectrum
title_sort massive relic neutrinos in the galactic halo and the knee in the cosmic ray spectrum
publishDate 2001
url http://sedici.unlp.edu.ar/handle/10915/81975
http://arxiv.org/abs/astro-ph/0112191v1
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AT epeleluisnicolas massiverelicneutrinosinthegalactichaloandthekneeinthecosmicrayspectrum
AT swainjd massiverelicneutrinosinthegalactichaloandthekneeinthecosmicrayspectrum
bdutipo_str Repositorios
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