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Title: Constraining dynamical neutrino mass generation with cosmological data

Abstract

We study models in which neutrino masses are generated dynamically at cosmologically late times. Our study is purely phenomenological and parameterized in terms of three effective parameters characterizing the redshift of mass generation, the width of the transition region, and the present day neutrino mass. We also study the possibility that neutrinos become strongly self-interacting at the time where the mass is generated. We find that in a number of cases, models with large present day neutrino masses are allowed by current CMB, BAO and supernova data. The increase in the allowed mass range makes it possible that a non-zero neutrino mass could be measured in direct detection experiments such as KATRIN. Intriguingly we also find that there are allowed models in which neutrinos become strongly self-interacting around the epoch of recombination.

Authors:
;  [1]
  1. Department of Physics and Astronomy, University of Aarhus, DK-8000 Aarhus C (Denmark)
Publication Date:
OSTI Identifier:
22667695
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 09; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGY; DETECTION; MASS; NEUTRINOS; RECOMBINATION; RED SHIFT; RELICT RADIATION; SUPERNOVAE

Citation Formats

Koksbang, S.M., and Hannestad, S., E-mail: koksbang@phys.au.dk, E-mail: sth@phys.au.dk. Constraining dynamical neutrino mass generation with cosmological data. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/09/014.
Koksbang, S.M., & Hannestad, S., E-mail: koksbang@phys.au.dk, E-mail: sth@phys.au.dk. Constraining dynamical neutrino mass generation with cosmological data. United States. doi:10.1088/1475-7516/2017/09/014.
Koksbang, S.M., and Hannestad, S., E-mail: koksbang@phys.au.dk, E-mail: sth@phys.au.dk. Fri . "Constraining dynamical neutrino mass generation with cosmological data". United States. doi:10.1088/1475-7516/2017/09/014.
@article{osti_22667695,
title = {Constraining dynamical neutrino mass generation with cosmological data},
author = {Koksbang, S.M. and Hannestad, S., E-mail: koksbang@phys.au.dk, E-mail: sth@phys.au.dk},
abstractNote = {We study models in which neutrino masses are generated dynamically at cosmologically late times. Our study is purely phenomenological and parameterized in terms of three effective parameters characterizing the redshift of mass generation, the width of the transition region, and the present day neutrino mass. We also study the possibility that neutrinos become strongly self-interacting at the time where the mass is generated. We find that in a number of cases, models with large present day neutrino masses are allowed by current CMB, BAO and supernova data. The increase in the allowed mass range makes it possible that a non-zero neutrino mass could be measured in direct detection experiments such as KATRIN. Intriguingly we also find that there are allowed models in which neutrinos become strongly self-interacting around the epoch of recombination.},
doi = {10.1088/1475-7516/2017/09/014},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 09,
volume = 2017,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 2017},
month = {Fri Sep 01 00:00:00 EDT 2017}
}