Constraining axion dark matter with Big Bang Nucleosynthesis
Abstract
We show that Big Bang Nucleosynthesis (BBN) significantly constrains axion-like dark matter. The axion acts like an oscillating QCD θ angle that redshifts in the early Universe, increasing the neutron–proton mass difference at neutron freeze-out. An axion-like particle that couples too strongly to QCD results in the underproduction of during BBN and is thus excluded. The BBN bound overlaps with much of the parameter space that would be covered by proposed searches for a time-varying neutron EDM. The QCD axion does not couple strongly enough to affect BBN
- Authors:
- Publication Date:
- Research Org.:
- Institute for Advanced Study, Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1197816
- Alternate Identifier(s):
- OSTI ID: 1454765
- Grant/Contract Number:
- SC0009988
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters. B
- Additional Journal Information:
- Journal Name: Physics Letters. B Journal Volume: 737 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Blum, Kfir, D'Agnolo, Raffaele Tito, Lisanti, Mariangela, and Safdi, Benjamin R. Constraining axion dark matter with Big Bang Nucleosynthesis. Netherlands: N. p., 2014.
Web. doi:10.1016/j.physletb.2014.07.059.
Blum, Kfir, D'Agnolo, Raffaele Tito, Lisanti, Mariangela, & Safdi, Benjamin R. Constraining axion dark matter with Big Bang Nucleosynthesis. Netherlands. https://doi.org/10.1016/j.physletb.2014.07.059
Blum, Kfir, D'Agnolo, Raffaele Tito, Lisanti, Mariangela, and Safdi, Benjamin R. Wed .
"Constraining axion dark matter with Big Bang Nucleosynthesis". Netherlands. https://doi.org/10.1016/j.physletb.2014.07.059.
@article{osti_1197816,
title = {Constraining axion dark matter with Big Bang Nucleosynthesis},
author = {Blum, Kfir and D'Agnolo, Raffaele Tito and Lisanti, Mariangela and Safdi, Benjamin R.},
abstractNote = {We show that Big Bang Nucleosynthesis (BBN) significantly constrains axion-like dark matter. The axion acts like an oscillating QCD θ angle that redshifts in the early Universe, increasing the neutron–proton mass difference at neutron freeze-out. An axion-like particle that couples too strongly to QCD results in the underproduction of during BBN and is thus excluded. The BBN bound overlaps with much of the parameter space that would be covered by proposed searches for a time-varying neutron EDM. The QCD axion does not couple strongly enough to affect BBN},
doi = {10.1016/j.physletb.2014.07.059},
journal = {Physics Letters. B},
number = C,
volume = 737,
place = {Netherlands},
year = {Wed Oct 01 00:00:00 EDT 2014},
month = {Wed Oct 01 00:00:00 EDT 2014}
}
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https://doi.org/10.1016/j.physletb.2014.07.059
https://doi.org/10.1016/j.physletb.2014.07.059
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Cited by: 38 works
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Figures / Tables:
Fig. 1: Left panel: BBN excluded region in the (gd, ma) plane is shown in orange. Other constraints include static EDM searches (blue shaded region, dashed blue boundary) and the bound from SN 1987A estimated conservatively in [16,17] (green shaded region). The shaded purple region with dot-dashed boundary denotes $f_a$more »
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.