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Constraining the Axion-Photon Coupling with Massive Stars

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arxiv 1210.1271 v1 pith:5MEOPQ6X submitted 2012-10-04 hep-ph astro-ph.SRhep-ex

Alexander Friedland (Los Alamos) , Maurizio Giannotti , Michael Wise (Barry U.) This is my paper · ORCID
classification hep-phastro-ph.SRhep-ex
keywords gammastarsaxion-photonblueevolutionaccountaxionbounds
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We point out that stars in the mass window ~ 8-12 Msun can serve as sensitive probes of the axion-photon interaction, g_{A\gamma\gamma}. Specifically, for these stars axion energy losses from the helium-burning core would shorten and eventually eliminate the blue loop phase of the evolution. This would contradict observational data, since the blue loops are required, e.g., to account for the existence of Cepheid stars. Using the MESA stellar evolution code, modified to include the extra cooling, we conservatively find g_{A\gamma\gamma} <~ 0.8 * 10^{-10} GeV^{-1}, which compares favorably with the existing bounds.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A comprehensive study of ALPs from $B$-decays

    hep-ph 2024-12 conditional novelty 6.0 of 10

    The paper derives the complete two-loop flavor-changing coupling of axion-like particles to b and s quarks and uses it to set updated limits on f_a in KSVZ, DFSZ and Flaxion models.

  2. Dark Photons from Red Dwarfs

    hep-ph 2026-06 unverdicted novelty 5.0 of 10

    Red dwarf mass-radius data from eclipsing binaries combined with dark-photon-inclusive evolution simulations produce competitive constraints on light dark photons.

  3. Blue Loops, Cepheids, and Forays into Axions

    hep-ph 2024-12 conditional novelty 5.0 of 10

    Axion energy loss can erase the blue loop stage in MESA models of 5 to 9 solar mass stars, giving new bounds on the axion-photon coupling from Cepheids and stronger projected bounds for heavier Cepheids.

  4. Dark matter from axion and small neutrino mass

    hep-ph 2024-12 conditional novelty 4.0 of 10

    A KSVZ-like model with a fermion dark matter candidate produced by UV freeze-in through the axion portal is shown to have viable parameter space at TeV mass and axion decay constant near 10^10 to 10^11 GeV.

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