147273 20260316125347.0 doi 10.1103/PhysRevLett.133.221005 sideral 141094 ART-2024-141094 eng Altenmüller, K. New upper limit on the axion-photon coupling with an extended CAST run with a Xe-Based micromegas detector 2024 Access copy available to the general public Unrestricted Hypothetical axions provide a compelling explanation for dark matter and could be emitted from the hot solar interior. The CERN Axion Solar Telescope has been searching for solar axions via their back conversion to x-ray photons in a 9-T 10-m long magnet directed toward the Sun. We report on an extended run with the International Axion Observatory pathfinder detector, doubling the previous exposure time. The detector was operated with a xenon-based gas mixture for part of the new run, providing technical insights for future configurations. No counts were detected in the 95% signal-encircling region during the new run, while 0.75 were expected. The new data improve the axion-photon coupling limit to 5.8×10−11  GeV−1 at 95% CL (for ma≲0.02  eV), the most restrictive experimental limit to date. info:eu-repo/grantAgreement/EC/H2020/788781/EU/Towards the detection of the axion with the International Axion Observatory/IAXOplus This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 788781-IAXOplus info:eu-repo/grantAgreement/EC/H2020/802836/EU/Axions and relatives across different mass scales/AxScale This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 802836-AxScale info:eu-repo/grantAgreement/ES/MICINN/PID2019-108122GB-C31 info:eu-repo/grantAgreement/ES/MICINN/PID2022-137268NB-C51 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 9.0 2024 PHYSICS, MULTIDISCIPLINARY 9 / 114 = 0.079 2024 Q1 T1 2.856 2024 Physics and Astronomy (miscellaneous) 2024 Q1 15.6 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Anastassopoulos, V. Arguedas-Cuendis, S. Aune, S. Baier, J. Barth, K. Bräuninger, H. Cantatore, G. Caspers, F. Castel, J.F. Universidad de Zaragoza (orcid)0000-0003-3532-7540 Çetin, S.A. Christensen, F. Cogollos, C. Dafni, T. Universidad de Zaragoza (orcid)0000-0002-8921-910X Davenport, M. Decker, T.A. Desch, K. Díez-Ibáñez, D. Döbrich, B. Ferrer-Ribas, E. Fischer, H. Funk, W. Galán, J. García, J.A. Universidad de Zaragoza (orcid)0000-0002-7399-7353 Gardikiotis, A. Giomataris, I. Golm, J. Hailey, C.H. Hasinoff, M.D. Hoffmann, D.H.H. Irastorza, I.G. Universidad de Zaragoza (orcid)0000-0003-1163-1687 Jacoby, J. Jakobsen, A.C. Jakovcic, K. Kaminski, J. Karuza, M. Kostoglou, S. Krieger, C. Lakic, B. Laurent, J.M. Luzón, G. Universidad de Zaragoza (orcid)0000-0002-5352-1884 Malbrunot, C. Margalejo, C. Universidad de Zaragoza (orcid)0000-0001-6213-5590 Maroudas, M. Miceli, L. Mirallas, H. Universidad de Zaragoza (orcid)0000-0002-9951-8680 Navarro, P. Obis, L. Universidad de Zaragoza (orcid)0000-0002-7990-2060 Özbey, A. Özbozduman, K. Papaevangelou, T. Pérez, O. Universidad de Zaragoza Pivovaroff, M.J. Rosu, M. Ruiz-Chóliz, E. (orcid)0000-0002-2417-7121 Ruz, J. Universidad de Zaragoza (orcid)0000-0002-3253-7027 Schmidt, S. Schumann, M. Semertzidis, Y.K. Solanki, S.K. Stewart, L. Vafeiadis, T. Vogel, J.K. 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. 133, 22 (2024), 221005 [8 pp.] Phys. rev. lett. Physical Review Letters 0031-9007 484914 http://zaguan.unizar.es/record/147273/files/texto_completo.pdf Versión publicada 2284369 http://zaguan.unizar.es/record/147273/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:147273 articulos driver 2026-03-16-08:29:36 ARTICLE