Flavor ratios of extragalactic neutrinos and neutrino shortcuts in extra dimensions

Journal Article · Thu Oct 01 04:00:00 EDT 2015 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2015/10/005· OSTI ID:22525297

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

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1. Fakultät für Physik, Technische Universität Dortmund, 44221 Dortmund (Germany)
2. Department of Physics and 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.

• OSTI ID: 22525297
• 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
79 ASTRONOMY AND ASTROPHYSICS
ASTROPHYSICS
BRANES
CONVERSION
DISPERSION RELATIONS
FLAVOR MODEL
GEODESICS
INTERGALACTIC SPACE
NEUTRINO OSCILLATION
NEUTRINOS
POTENTIALS
PROBES