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An improved limit on the axion-photon coupling from the CAST experiment

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arxiv hep-ex/0702006 v3 pith:ADNQPKCE submitted 2007-02-02 hep-ex astro-ph

classification hep-exastro-ph
keywords limitaxionaxion-photoncastcouplingimprovedsolarabsence
verification ladder T0 review T1 audit T2 compute T3 formal
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We have searched for solar axions or similar particles that couple to two photons by using the CERN Axion Solar Telescope (CAST) setup with improved conditions in all detectors. From the absence of excess X-rays when the magnet was pointing to the Sun, we set an upper limit on the axion-photon coupling of 8.8 x 10^{-11} GeV^{-1} at 95% CL for m_a <~ 0.02 eV. This result is the best experimental limit over a broad range of axion masses and for m_a <~ 0.02 eV also supersedes the previous limit derived from energy-loss arguments on globular-cluster stars.

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Cited by 13 Pith papers

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

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    hep-ph 2025-12 conditional novelty 6.0 of 10

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    Axion dark matter parameter space shifts dramatically when kinetic misalignment and memory-burdened primordial black hole evaporation are combined.

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    hep-ph 2024-12 conditional novelty 6.0 of 10

    Using two clustering mechanisms, concurrent collapse and gravitational clustering, the authors derive hot dark matter density profiles and recast CDM telescope bounds into axion-photon coupling limits for 1 to 10 eV axions.

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  9. New quantum information perspectives in the axion--photon and neutrino systems

    hep-ph 2026-05 unverdicted novelty 5.0 of 10

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  10. Hunting for Axions in REactor neutrino COherent scattering Detection Experiment

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    RECODE, a reactor experiment with two germanium detectors, could probe axion-photon and axion-electron couplings into the cosmological triangle region at masses around 0.3 to 0.9 MeV.

  11. Thermomagnetic Ettingshausen-Nernst effect in tachocline, magnetic reconnection phenomenon in lower layers, axion mechanism of solar luminosity variations, coronal heating problem solution and mechanism of ADM variations around BH

    astro-ph.SR 2019-08 reject novelty 4.0 of 10

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  12. Experiments to test the hypothesis for solar and dark matter axions

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  13. Axions and Axion-like particles: collider searches

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