Flavor ratios of extragalactic neutrinos and neutrino shortcuts in extra dimensions

Journal Article · Fri Oct 02 04:00:00 EDT 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/10/005· OSTI ID:22458386

Aeikens, Elke; Päs, Heinrich ^[1]; Pakvasa, Sandip ^[2]; Sicking, Philipp ^[1]

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1. Fakultät für Physik, Technische Universität Dortmund,44221 Dortmund (Germany)
2. Department of Physics & Astronomy, University of Hawaii,Honolulu, HI 96822 (United States)

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 two limiting cases of this effect, first active-sterile neutrino oscillations with a constant ADR potential and second an MSW-like resonant conversion arising from geodesics oscillating around the brane in an asymmetrically warped extra dimension. We demonstrate that the second case has the potential to suppress significantly the flux of specific flavors such as ν{sub μ} or ν{sub τ} at high energies.

• Sponsoring Organization: SCOAP3, CERN, Geneva (Switzerland)
• OSTI ID: 22458386
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 10 Vol. 2015; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASTROPHYSICS
DISPERSION RELATIONS
EXPERIMENT RESULTS
FLAVOR MODEL
GEODESICS
NEUTRINO OSCILLATION
NEUTRINOS
PROBES