Cosmic Neutrinos

Details Cosmic Neutrinos Cosmic Neutrinos

2008-01-31

arxiv.org/abs/0802.0013v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages, 16 figures, uses RevTeX, lecture at 2007 SLAC Summer Institute; added references, footnote clarified

Scientific paper

I recall the place of neutrinos in the electroweak theory and summarize what we know about neutrino mass and flavor change. I next review the essential characteristics expected for relic neutrinos and survey what we can say about the neutrino contribution to the dark matter of the Universe. Then I discuss the standard-model interactions of ultrahigh-energy neutrinos, paying attention to the consequences of neutrino oscillations, and illustrate a few topics of interest to neutrino observatories. I conclude with short comments on the remote possibility of detecting relic neutrinos through annihilations of ultrahigh-energy neutrinos at the $Z$ resonance.

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