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Physics potential of the International Axion Observatory (IAXO)
Name
1904.09155.pdf
Description
Submitted version
Size
4.69 MB
Format
Adobe PDF
Checksum (MD5)
1c2d1c6eb831a91663fa831486a25265
Journal
Journal of Cosmology and Astroparticle Physics
Publisher
IOP Publishing
Version
Original manuscript
Abstract
© 2019 IOP Publishing Ltd and Sissa Medialab. We review the physics potential of a next generation search for solar axions: the International Axion Observatory (IAXO) . Endowed with a sensitivity to discover axion-like particles (ALPs) with a coupling to photons as small as gaγ∼ 10-12 GeV-1, or to electrons gae∼10-13, IAXO has the potential to find the QCD axion in the 1 meV∼1 eV mass range where it solves the strong CP problem, can account for the cold dark matter of the Universe and be responsible for the anomalous cooling observed in a number of stellar systems. At the same time, IAXO will have enough sensitivity to detect lower mass axions invoked to explain: 1) the origin of the anomalous "transparency" of the Universe to gamma-rays, 2) the observed soft X-ray excess from galaxy clusters or 3) some inflationary models. In addition, we review string theory axions with parameters accessible by IAXO and discuss their potential role in cosmology as Dark Matter and Dark Radiation as well as their connections to the above mentioned conundrums.
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
10.1088/1475-7516/2019/06/047
