{"about":{"site":"https://codewithpapers.app","non_affiliation":"Code with Papers and Syntology are not affiliated with, endorsed by, or sponsored by Papers with Code, Meta, or the pwc-archive mirror.","licence":"CC BY-SA 4.0","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","attribution":"https://codewithpapers.app/attribution","modified":"archive material modified by Syntology; see the attribution page"},"url":"/paper/new-cast-limit-on-the-axion-photon","title":"New CAST Limit on the Axion-Photon Interaction","arxiv_id":"1705.02290","date":"2017-05-05","proceeding":null,"authors":["CAST collaboration","V. Anastassopoulos","S. Aune","K. Barth","A. Belov","H. Brauninger","G. Cantatore","J. M. Carmona","J. F. Castel","S. A. Cetin","F. Christensen","J. I. Collar","T. Dafni","M. Davenport","T. A. Decker","A. Dermenev","K. Desch","C. Eleftheriadis","G. Fanourakis","E. Ferrer-Ribas","H. Fischer","J. A. Garcia","A. Gardikiotis","J. G. Garza","E. N. Gazis","T. Geralis","I. Giomataris","S. Gninenko","C. J. Hailey","M. D. Hasinoff","D. H. H. Hoffmann","F. J. Iguaz","I. G. Irastorza","A. Jakobsen","J. Jacoby","K. Jakovcic","J. Kaminski","M. Karuza","N. Kralj","M. Krcmar","S. Kostoglou","Ch. Krieger","B. Lakic","J. M. Laurent","A. Liolios","A. Ljubicic","G. Luzon","M. Maroudas","L. Miceli","S. Neff","I. Ortega","T. Papaevangelou","K. Paraschou","M. J. Pivovaroff","G. Raffelt","M. Rosu","J. Ruz","E. Ruiz Choliz","I. Savvidis","S. Schmidt","Y. K. Semertzidis","S. K. Solanki","L. Stewart","T. Vafeiadis","J. K. Vogel","S. C. Yildiz","K. Zioutas"],"abstract":"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 detectors and a new x-ray telescope. These innovations also serve as pathfinders for a possible next-generation axion helioscope.","url_abs":"https://arxiv.org/abs/1705.02290v2","url_pdf":"https://arxiv.org/pdf/1705.02290v2.pdf","source":{"archive":"pwc-archive (Hugging Face), CC BY-SA 4.0","snapshot":"2025-07-28","licence_url":"https://creativecommons.org/licenses/by-sa/4.0/legalcode","row_kind":"links_only","authors_date_abstract":"arXiv metadata, CC0 1.0 (https://info.arxiv.org/help/license), from the Kaggle arXiv metadata snapshot of 2026-09-12"},"code_links":[{"paper_slug":"new-cast-limit-on-the-axion-photon","repo_url":"https://github.com/jesseliuphys/dm_sensitivity","is_official":0,"mentioned_in_paper":0,"mentioned_in_github":1,"framework":"none","reach":null}],"tasks":[],"methods":[],"datasets_introduced":[],"methods_introduced":[],"results":[],"syntology":{"syntology_url":null,"atlas_url":null,"mcp":null,"developers":"https://syntology.ai/developers"},"arxiv_metadata":null,"syntology_extracted_results":null}