High Energy Neutrino Interactions

Details High Energy Neutrino Interactions High Energy Neutrino Interactions

2005-07-29

arxiv.org/abs/hep-ph/0508002v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk given at the ``Recontres de Moriond, Very High Energy Phenomena in the Universe'', March 12-19, 2005, La Thuile,

Scientific paper

We study ultrahigh energy astrophysical neutrinos and their interactions within the Standard Model and beyond. We consider propagation of muon neutrinos, tau neutrinos that originate in $\nu_\mu \to \nu_\tau$ oscillations, and tau leptons produced in charged-current neutrino interactions. We show that high energy taus lose their energy through bremsstrahlung, pair production and photonuclear processes until they reach energy of $\sim 10^8$ GeV, bellow which they are more likely to decay. Neutrino interactions at energies above $10^8$GeV could lead to the production of microscopic black holes predicted in theories of extra dimensions, or they can undergo instanton-induced processes. We discuss potential signals for these processes in detectors such as IceCube and ANITA.

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