| Article | |
| Report number | arXiv:2406.16840 |
| Title | New Upper Limit on the Axion-Photon Coupling with an Extended CAST Run with a Xe-Based Micromegas Detector |
| Author(s) |
Altenmüller, K. (U. Zaragoza (main)) ; Anastassopoulos, V. (Patras U.) ; Arguedas-Cuendis, S. (CERN) ; Aune, S. (IRFU, Saclay) ; Baier, J. (Freiburg U.) ; Barth, K. (CERN) ; Bräuninger, H. (Garching, Max Planck Inst., MPE) ; Cantatore, G. (Trieste U.) ; Caspers, F. (CERN ; ESI, Archamps) ; Castel, J.F. (U. Zaragoza (main)) ; Çetin, S.A. (Istinye U., Istanbul) ; Christensen, F. (Denmark, Tech. U.) ; Cogollos, C. (Barcelona, IEEC ; U. Zaragoza (main)) ; Dafni, T. (U. Zaragoza (main)) ; Davenport, M. (CERN) ; Decker, T.A. (LLNL, Livermore) ; Desch, K. (Bonn U.) ; Díez-Ibáñez, D. (U. Zaragoza (main)) ; Döbrich, B. (CERN) ; Ferrer-Ribas, E. (IRFU, Saclay) ; Fischer, H. (Freiburg U.) ; Funk, W. (CERN) ; Galán, J. (U. Zaragoza (main)) ; García, J.A. (U. Zaragoza (main)) ; Gardikiotis, A. (INFN, Padua) ; Giomataris, I. (IRFU, Saclay) ; Golm, J. (CERN ; U. Jena (main)) ; Hailey, C.H. (Columbia U.) ; Hasinoff, M.D. (British Columbia U.) ; Hoffmann, D.H.H. (Xian Jiaotong U.) ; Irastorza, I.G. (U. Zaragoza (main)) ; Jacoby, J. (Freiburg U.) ; Jakobsen, A.C. (Denmark, Tech. U.) ; Jakovčić, K. (Boskovic Inst., Zagreb) ; Kaminski, J. (Bonn U.) ; Karuza, M. (INFN, Trieste ; Rijeka U.) ; Kostoglou, S. (CERN) ; Krieger, C. (U. Hamburg (main)) ; Lakić, B. (Boskovic Inst., Zagreb) ; Laurent, J.M. (CERN) ; Luzón, G. (U. Zaragoza (main)) ; Malbrunot, C. (CERN) ; Margalejo, C. (U. Zaragoza (main)) ; Maroudas, M. (U. Hamburg (main)) ; Miceli, L. (IBS, Daejeon, CAPP) ; Mirallas, H. (U. Zaragoza (main)) ; Navarro, P. (Cartagena Politecnica U.) ; Obis, L. (U. Zaragoza (main)) ; Özbey, A. (Istinye U., Istanbul ; Istanbul U.) ; Özbozduman, K. (Istinye U., Istanbul ; Gazi U.) ; Papaevangelou, T. (IRFU, Saclay) ; Pérez, O. (U. Zaragoza (main)) ; Pivovaroff, M.J. (LLNL, Livermore) ; Rosu, M. (ELI-NP, Bucharest) ; Ruiz-Chóliz, E. (U. Zaragoza (main)) ; Ruz, J. (LLNL, Livermore ; U. Zaragoza (main)) ; Schmidt, S. (Bonn U.) ; Schumann, M. (Freiburg U.) ; Semertzidis, Y.K. (IBS, Daejeon, CAPP ; KAIST, Taejon) ; Solanki, S.K. (Gottingen, Max Planck Inst.) ; Stewart, L. (CERN) ; Vafeiadis, T. (CERN) ; Vogel, J.K. (LLNL, Livermore ; U. Zaragoza (main)) ; Zioutas, K. (CERN ; Patras U.) |
| Publication | 2024-11-27 |
| Imprint | 2024-06-24 |
| Number of pages | 9 |
| Note | Corresponding authors: C. Margalejo (cmargalejo@unizar.es) and J. Ruz (Jaime.Ruz@cern.ch) |
| In: | Phys. Rev. Lett. 133 (2024) 221005 |
| DOI | 10.1103/PhysRevLett.133.221005 (publication) |
| Subject category | hep-ex ; Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CAST |
| Abstract | Hypothetical axions provide a compelling explanation for dark matter and could be emitted from the hot solar interior. The CERN Axion Solar Telescope (CAST) has been searching for solar axions via their back conversion to X-ray photons in a 9-T 10-m long magnet directed towards the Sun. We report on an extended run with the IAXO (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 detector configurations in IAXO. No counts are detected in the 95% signal-encircling region during the new run, while 0.75 are expected. The new data improve the axion-photon coupling limit to 5.8$\times 10^{-11}\,$GeV$^{-1}$ at 95% C.L. (for $m_a \lesssim 0.02$ eV), the most restrictive experimental limit to date. |
| Copyright/License | publication: © 2024 authors (License: CC BY 4.0), sponsored by SCOAP³ preprint: (License: CC BY 4.0) |
Corresponding record in: Inspire
Registre creat el 2024-06-26, darrera modificació el 2024-12-07