New Upper Limit on the Axion-Photon Coupling with an Extended CAST Run with a Xe-Based Micromegas Detector

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 m_{a}≲0.02 eV), the most restrictive experimental limit to date.

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Publication Details

Journal
Physical Review Letters
Published
2024-11-27
DOI
https://doi.org/10.1103/physrevlett.133.221005
Citations
37
Primary Topic
Dark Matter and Cosmic Phenomena
Type
article
Field-Weighted Citation Impact
24.41

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article

New Upper Limit on the Axion-Photon Coupling with an Extended CAST Run with a Xe-Based Micromegas Detector

Anders C. Jakobsen, A. Özbey, T. Dafní, Babette Döbrich et al.
37 citations
Physical Review Letters
Dark Matter and Cosmic Phenomena
24.41
article

New Upper Limit on the Axion-Photon Coupling with an Extended CAST Run with a Xe-Based Micromegas Detector

Anders C. Jakobsen, A. Özbey, T. Dafní, Babette Döbrich, S. Kostoglou, C. Malbrunot, V. Anastassopoulos, Elisa Ruiz-Chóliz, G. Luzón, G. Cantatore, H. Bräuninger, L. Miceli, M. Karuza, T. Papaevangelou, B. Lakić, C. Cogollos, Jean‐Paul Laurent, J. Golm, H. Mirallas, Sebastian Schmidt, T. Papaevangelou, S. K. Solanki, A. Gardikiotis, P. Navarro, K. Zioutas, F. Caspers, K. Desch, L. Obis, M. Rosu, J. Ruz, Óscar Cano Pérez, I.G. Irastorza, M. J. Pivovaroff, Yannis K. Semertzidis, J. Baier, J. Kamiński, D. Díez-Ibáñez, Marios Maroudas, M. Schümann, Finn E. Christensen, C. Margalejo, K. Barth, D. H. H. Hoffmann, J. Galán, J. K. Vogel, W. Funk, K. Jakovčić, S. Arguedas-Cuendis, H. Fischer, K. Altenmüller, M. D. Hasinoff, M. Davenport, Todd A. Decker, José Miguel Alonso Garcia, T. Vafeiadis, Selim Çetin, E. Ferrer-Ribas, J. Jacoby, L. Stewart, Charles J. Hailey, S. Aune, I. Giomataris, J. Castel, C. Krieger
article en
37 citations

Abstract

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 m_{a}≲0.02 eV), the most restrictive experimental limit to date.

Physical Review LettersVol. 133(22)
Lawrence Livermore National Laboratory (US), University of Bonn (DE), University of British Columbia (CA), University of Trieste (IT), University of Rijeka (HR), Korea Advanced Institute of Science and Technology (KR), Universität Hamburg (DE), Istituto Nazionale di Fisica Nucleare (IT), University of Freiburg (DE), University of Patras (GR), Universidad de Zaragoza (ES), Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR), Université Paris-Saclay (FR), Universidad Politécnica de Cartagena (ES), Max Planck Institute for Extraterrestrial Physics (DE), Institute for Basic Science (KR), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Istanbul University-Cerrahpaşa (TR), Max Planck Institute for Solar System Research (DE), Istinye University (TR), Ruđer Bošković Institute (HR), CEA Paris-Saclay (FR), Extreme Light Infrastructure - Nuclear Physics (RO), Istituto Nazionale di Fisica Nucleare, Sezione di Trieste (IT), Institut de Recherche sur les Lois Fondamentales de l'Univers (FR), Boğaziçi University (TR), European Organization for Nuclear Research (CH), Universitat de Barcelona (ES), Friedrich Schiller University Jena (DE), Columbia University (US), Xi'an Jiaotong University (CN), Technical University of Denmark (DK)
National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, Türkiye Atom Enerjisi Kurumu, CERN, Ministarstvo znanosti i obrazovanja, European Commission, Deutsche Forschungsgemeinschaft, Agence Nationale de la Recherche, Bundesministerium für Bildung und Forschung, General Secretariat for Research and Technology, Ministerio de Ciencia e Innovación, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Institute for Basic Science, Natural Sciences and Engineering Research Council of Canada, European Research Council, Agencia Estatal de Investigación, Laboratory Directed Research and Development, Lawrence Livermore National Laboratory, H2020 Marie Skłodowska-Curie Actions
Affordable and clean energy
Openalex Percentile: Top 0%
Dark Matter and Cosmic Phenomena
24.41
DOIOpen Access PDFOpenAlex
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