# SUSY 2015, 23rd International Conference on Supersymmetry and Unification of Fundamental Interactions

23-29 August 2015
Lake Tahoe
US/Pacific timezone

## Flavor ratios of extragalactical neutrinos and neutrino shortcuts in extra dimensions

28 Aug 2015, 16:55
25m
Aspen ()

### Aspen

Flavor Violation Theory and Experiment

### Speaker

Philipp Sicking (TU Dortmund)

### Description

The recent measurement of high energy extragalactic neutrinos by the IceCube Collaboration has opened a new window to probe non-standard neutrino properties. Among other effects, sterile neutrino altered dispersion relations (ADRs) due to shortcuts in an extra dimension can significantly affect astrophysical flavor ratios. We discuss an MSW-like resonant conversion arising from geodesics oscillating around the brane in an asymmetrically warped extra dimension. We demonstrate that this case has the potential to suppress significantly the flux of specific flavors such as $\nu_\mu$ or $\nu_\tau$ at high energies.

### Primary author

Philipp Sicking (TU Dortmund)