skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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, Princton, NJ (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1197816
Alternate Identifier(s):
OSTI ID: 1454765
Grant/Contract Number:  
SC0009988
Resource Type:
Journal Article: 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. doi: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. doi: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},
issn = {0370-2693},
number = C,
volume = 737,
place = {Netherlands},
year = {2014},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.physletb.2014.07.059

Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

Figures / Tables:

Fig. 1 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 » > mpl . Right panel: The future projected sensitivity of the oscillating EDM search of Refs. [16,19]. CASPEr1 and CASPEr2 are the first and second generations of the experiments, respectively. The black line in both panels represents the QCD axion, $f_am_a$ ≈ Λ$^2_{QCD}$. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)« less

Save / Share:

Figures / Tables found in this record:

    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.