61665 20250722154010.0 doi 10.1038/nphys4109 sideral 99695 ART-2017-99695 eng Anastassopoulos, V. New CAST limit on the axion-photon interaction 2017 Access copy available to the general public Unrestricted Hypothetical low-mass particles, such as axions, provide a compelling explanation for the dark matter in the universe. Such particles are expected to emerge abundantly from the hot interior of stars. To test this prediction, the CERN Axion Solar Telescope (CAST) uses a 9 T refurbished Large Hadron Collider test magnet directed towards the Sun. In the strong magnetic field, solar axions can be converted to X-ray photons which can be recorded by X-ray detectors. In the 2013-2015 run, thanks to low-background detectors and a new X-ray telescope, the signal-to-noise ratio was increased by about a factor of three. Here, we report the best limit on the axion-photon coupling strength (0.66 × 10 -10 GeV -1 at 95% confidence level) set by CAST, which now reaches similar levels to the most restrictive astrophysical bounds. info:eu-repo/grantAgreement/EC/FP7/240054/EU/Novel Developments in Time Projection Chambers (TPCs) for Rare Event Searches in Underground Astroparticle EXperiments/TREX info:eu-repo/grantAgreement/ES/MINECO-FEDER/FPA2011-24058 info:eu-repo/grantAgreement/ES/MINECO/FPA2013-41085-P info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 22.727 2017 PHYSICS, MULTIDISCIPLINARY 2 / 78 = 0.026 2017 Q1 T1 9.791 2017 Physics and Astronomy (miscellaneous) 2017 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Aune, S. Barth, K. Belov, A. Bräuninger, H. Cantatore, G. Carmona, J.M. Universidad de Zaragoza (orcid)0000-0003-2264-2306 Castel, J.F. Universidad de Zaragoza (orcid)0000-0003-3532-7540 Cetin, S.A. Christensen, F. Collar, J.I. Dafni, T. Universidad de Zaragoza (orcid)0000-0002-8921-910X Davenport, M. Decker, T.A. Dermenev, A. Desch, K. Eleftheriadis, C. Fanourakis, G. Ferrer-Ribas, E. Fischer, H. García, J.A. (orcid)0000-0002-7399-7353 Gardikiotis, A. Garza, J.G. (orcid)0000-0003-0800-1588 Gazis, E.N. Geralis, T. Giomataris, I. Gninenko, S. Hailey, C.J. Hasinoff, M.D. Hoffmann, D.H.H. Iguaz, F.J. Universidad de Zaragoza (orcid)0000-0001-6327-9369 Irastorza, I.G. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Jakobsen, A. Jacoby, J. Jakovcic, K. Kaminski, J. Karuza, M. Kralj, N. Krcmar, M. Kostoglou, S. Krieger , Ch. Lakic, B. Laurent, J.M. Liolios, A. Ljubicic, A. Luzón, G. Universidad de Zaragoza (orcid)0000-0002-5352-1884 Maroudas, M. Miceli, L. Neff, S. Ortega, I. Papaevangelou, T. Paraschou, K. Pivovaroff, M.J. Raffelt, G. Rosu, M. Ruz, J. (orcid)0000-0002-3253-7027 Chóliz, E.R. Savvidis, I. Schmidt, S. Semertzidis, Y.K. Solanki, S.K. Stewart, L. Vafeiadis, T. Vogel, J.K. Yildiz, S.C. Zioutas, K. 2004 X Universidad de Zaragoza Dpto. Física Teórica Proy. investigación HCA 2004 390 Universidad de Zaragoza Dpto. Física Teórica Área Física Atóm.Molec.y Nucl. 13, 6 (2017), 584-590 Nat. Phys. Nature Physics 1745-2473 598184 http://zaguan.unizar.es/record/61665/files/texto_completo.pdf Versión publicada 140833 http://zaguan.unizar.es/record/61665/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:61665 articulos driver 2025-07-22-15:35:39 ARTICLE