Non-thermal WIMPs as dark radiation

Journal Article · Tue Jun 24 00:00:00 EDT 2014 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4883415· OSTI ID:22306143

Queiroz, Farinaldo S. ^[1]

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1. Department of Physics and Santa Cruz Institute for Particle Physics University of California, Santa Cruz, CA 95064 (United States)

It has been thought that only light species could behave as radiation and account for the dark radiation observed recently by Planck, WMAP9, South Pole and ATACAMA telescopes. In this work we will show GeV scale WIMPs can plausibly account for the dark radiation as well. Heavy WIMPs might mimic the effect of a half neutrino species if some fraction of them are produced non-thermally after their thermal freeze-out. In addition, we will show how BBN, CMB and Structure Formation bounds might be circumvented.

• OSTI ID: 22306143
• Journal Information: AIP Conference Proceedings, Vol. 1604, Issue 1; Conference: PPC 2013: 7. international conference on interconnections between particle physics and cosmology, Lead-Deadwood, SD (United States), 24 Jun - 6 Jul 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
FREEZING OUT
GEV RANGE
NEUTRINOS
TELESCOPES
WIMPS