publication . Article . Preprint . Other literature type . 2017

New CAST Limit on the Axion-Photon Interaction

CAST collaboration; Anastassopoulos, V.; Aune, S.; Barth, K.; Belov, A.; Brauninger, H.; Cantatore, G.; Carmona, J. M.; Castel, J. F.; Cetin, S. A.; ...
Open Access English
  • Published: 05 May 2017
  • Publisher: HAL CCSD
During 2003--2015, the CERN Axion Solar Telescope (CAST) has searched for $a\to\gamma$ conversion in the 9 T magnetic field of a refurbished LHC test magnet that can be directed toward the Sun. In its final phase of solar axion searches (2013--2015), CAST has returned to evacuated magnet pipes, which is optimal for small axion masses. The absence of a significant signal above background provides a world leading limit of $g_{a\gamma} < 0.66 \times 10^{-10} {\rm GeV}^{-1}$ (95% C.L.) on the axion-photon coupling strength for $m_a \lesssim 0.02$ eV. Compared with the first vacuum phase (2003--2004), the sensitivity was vastly increased with low-background x-ray det...
free text keywords: experimental results, CERN Lab, background, sensitivity, CERN LHC Coll, magnetic field, coupling constant, coupling: (axion 2photon), magnet, axion: mass, CAST, axion: solar, S029IAG, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], [ PHYS.PHYS.PHYS-INS-DET ] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Axions; solar axions; axion helioscope; dark matter; axion-like particles, General Physics and Astronomy, High Energy Physics - Experiment, Physics - Instrumentation and Detectors, physics.ins-det, Detectors and Experimental Techniques, hep-ex, Particle Physics - Experiment, Photon, Particle physics, Dark matter, Axion, Telescope, law.invention, law, CERN Axion Solar Telescope, Nuclear physics, Large Hadron Collider, Physics, Helioscope
Funded by
NSF| CAREER: New Detectors and Techniques for Astroparticle and Neutrino Physics
  • Funder: National Science Foundation (NSF)
  • Project Code: 0239812
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Physics
  • Funder: Natural Sciences and Engineering Research Council of Canada (NSERC)
The Elusives Enterprise: Asymmetries of the Invisible Universe
  • Funder: European Commission (EC)
  • Project Code: 674896
  • Funding stream: H2020 | MSCA-ITN-ETN
Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments
  • Funder: European Commission (EC)
  • Project Code: 240054
  • Funding stream: FP7 | SP2 | ERC
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