Theoretically Palatable Flavor Combinations of Astrophysical Neutrinos

Mauricio Bustamante, John F. Beacom, and Walter Winter

Phys. Rev. Lett. 115, 161302 – Published 15 October 2015

Abstract

The flavor composition of high-energy astrophysical neutrinos can reveal the physics governing their production, propagation, and interaction. The IceCube Collaboration has published the first experimental determination of the ratio of the flux in each flavor to the total. We present, as a theoretical counterpart, new results for the allowed ranges of flavor ratios at Earth for arbitrary flavor ratios in the sources. Our results will allow IceCube to more quickly identify when their data imply standard physics, a general class of new physics with arbitrary (incoherent) combinations of mass eigenstates, or new physics that goes beyond that, e.g., with terms that dominate the Hamiltonian at high energy.

Received 2 July 2015

DOI:https://doi.org/10.1103/PhysRevLett.115.161302

Authors & Affiliations

Mauricio Bustamante^1,2,*, John F. Beacom^1,2,3,†, and Walter Winter^4,‡

¹Center for Cosmology and AstroParticle Physics (CCAPP), Ohio State University, Columbus, Ohio 43210, USA
²Department of Physics, Ohio State University, Columbus, Ohio 43210, USA
³Department of Astronomy, Ohio State University, Columbus, Ohio 43210, USA
⁴DESY, Platanenallee 6, D-15738 Zeuthen, Germany

^*bustamanteramirez.1@osu.edu
^†beacom.7@osu.edu
^‡walter.winter@desy.de

Effect of New Physics in Astrophysical Neutrino Flavor

Carlos. A. Argüelles, Teppei Katori, and Jordi Salvado

Phys. Rev. Lett. 115, 161303 (2015)

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Vol. 115, Iss. 16 — 16 October 2015

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