Stellar recipes for axion hunters

By Maurizio Giannotti, Igor G. Irastorza, J. Redondo, A. Ringwald, K. Saikawa. 2017

214 citations recorded by the source corpus.

There are a number of observational hints from astrophysics which point to the existence of stellar energy losses beyond the ones accounted for by neutrino emission. These excessive energy losses may be explained by the existence of a new sub-keV mass pseudoscalar Nambu-Goldstone boson with tiny couplings to photons, electrons, and nucleons. An attractive possibility is to identify this particle with the axion—the hypothetical pseudo Nambu-Goldstone boson predicted by the Peccei-Quinn solution to the strong CP problem. We explore this possibility in terms of a DFSZ-type axion and of a KSVZ-type axion/majoron, respectively. Both models allow a good global fit to the data, prefering an axion mass around 10 meV. We show that future axion experiments—the fifth force experiment ARIADNE and the helioscope IAXO—can attack the preferred mass range from the lower and higher end, respectively. An axion in this mass range can also be the main constituent of dark matter.

Subfields: Artificial Intelligence, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/4cea4514f0995f4e6264e44f994bb330a6862e08

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Citations in the corpus

Hot axions and the H0 tension (2018, background): “Another important constraint on the QCD axion comes from the SN 1987A cooling process due to coupling with nucleons [60, 71, 73, 74].”
The landscape of QCD axion models (2020, methodology): “0, and favors the axion (or ALP) solution at slightly more than 3σ [34].”
Physics potential of the International Axion Observatory (IAXO) (2019, background): “In particular, axions can account for the whole DM in the parameter range fA ≈ O(108–109) GeV and mA ≈ O(10−3–10−2) eV with a mild tuning of the phase of the parameter cN [122, 142].”
Advancing globular cluster constraints on the axion-photon coupling (2022, background): “This horizontal branch hint is one of several well-known astrophysical anomalies which can be improved by the addition of novel energy-loss [69].”
New experimental approaches in the search for axion-like particles (2018, background): “28 < vu/vd < 140 [79], which implies 0.”
Superfluidity in nuclear systems and neutron stars (2018, background): “This allows setting constraints on the strength of coupling of these particles to SM matter, by requiring that their existence does not introduce contradictions in estimates of stellar lifetimes and energy-loss rates (Giannotti et al., 2017; Raffelt, 1996, 2008).”
Pulsating white dwarfs: new insights (2019, background): “Giannotti (2017), Giannotti et al. (2017), and Hoof et al. (2019) present updated accounts of observational hints from astrophysics pointing to the existence of stellar energy losses beyond the ones accounted for by neutrino emission, and future experiments aimed at detecting axions.”