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Title: CAST constraints on the axion-electron coupling

Journal Article · · Journal of Cosmology and Astroparticle Physics
; ;  [1];  [2]; ; ; ; ;  [3]; ; ;  [4];  [5];  [6]; ;  [7]; ;  [8]; ;
  1. European Organization for Nuclear Research (CERN), Geneve (Switzerland)
  2. Institute for Nuclear Research (INR), Russian Academy of Sciences, Moscow (Russian Federation)
  3. Laboratorio de Fisica Nuclear y Altas Energias, Universidad de Zaragoza, Zaragoza (Spain)
  4. Max-Planck-Institut fuer extraterrestrische Physik, Garching (Germany)
  5. Enrico Fermi Institute and KICP, University of Chicago, Chicago, IL (United States)
  6. Aristoteles University of Thessaloniki, Thessaloniki (Greece)
  7. National Center for Scientific Research ''Demokritos'', Athens (Greece)
  8. IRFU, Centre d'Etudes Nucleaires de Saclay (CEA-Saclay), Gif-sur-Yvette (France)

In non-hadronic axion models, which have a tree-level axion-electron interaction, the Sun produces a strong axion flux by bremsstrahlung, Compton scattering, and axio-recombination, the ''BCA processes.'' Based on a new calculation of this flux, including for the first time axio-recombination, we derive limits on the axion-electron Yukawa coupling g{sub ae} and axion-photon interaction strength g{sub aγ} using the CAST phase-I data (vacuum phase). For m{sub a}∼<10 meV/c{sup 2} we find g{sub aγ} g{sub ae} < 8.1 × 10{sup −23} GeV{sup −1} at 95% CL. We stress that a next-generation axion helioscope such as the proposed IAXO could push this sensitivity into a range beyond stellar energy-loss limits and test the hypothesis that white-dwarf cooling is dominated by axion emission.

OSTI ID:
22282862
Journal Information:
Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 05; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
Country of Publication:
United States
Language:
English

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Cited By (12)

On axionic dark matter in Type IIA string theory journal January 2014
Axion global fits with Peccei-Quinn symmetry breaking before inflation using GAMBIT journal March 2019
Axion-like-particle decay in strong electromagnetic backgrounds journal December 2019
Axion searches with the EDELWEISS-II experiment journal November 2013
Solar axion flux from the axion-electron coupling journal December 2013
First Axion Results from the XENON100 Experiment text January 2014
Axion global fits with Peccei-Quinn symmetry breaking before inflation using GAMBIT text January 2019
First axion results from the XENON100 experiment text January 2014
On axionic dark matter in Type IIA string theory text January 2013
Axion Dark Matter Detection using Atomic Transitions text January 2014
Towards a medium-scale axion helioscope and haloscope text January 2017
Axion-like-particle decay in strong electromagnetic backgrounds text January 2019

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