Suppression of cosmological sterile neutrino production by altered dispersion relations

Elke Aeikens, Heinrich Päs, Sandip Pakvasa, and Thomas J. Weiler

Phys. Rev. D 94, 113010 – Published 19 December 2016

Abstract

Early Universe cosmology imposes stringent bounds on light sterile neutrinos mixing with the active flavors. Here we discuss how altered dispersion relations can weaken such bounds and allow compatibility of new sterile neutrino degrees of freedom with early Universe cosmology and particular a successful generation of the light elements in the early Universe.

Received 22 June 2016

DOI:https://doi.org/10.1103/PhysRevD.94.113010

Physics Subject Headings (PhySH)

Neutrino interactions Neutrino oscillations

Sterile neutrinos

Particles & Fields

Authors & Affiliations

Elke Aeikens¹, Heinrich Päs², Sandip Pakvasa³, and Thomas J. Weiler⁴

¹University of Vienna, Faculty of Physics, Boltzmanngasse 5, A-1090 Vienna, Austria
²Fakultät für Physik, Technische Universität Dortmund, 44221 Dortmund, Germany
³Department of Physics & Astronomy, University of Hawaii, Honolulu, Hawaii 96822, USA
⁴Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235, USA

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Issue

Vol. 94, Iss. 11 — 1 December 2016

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Physical Review D

covering particles, fields, gravitation, and cosmology