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

Altenmüller, K.; Anastassopoulos, V.; Arguedas-Cuendis, S.; Aune, S.; Baier, J.; Barth, K.; Bräuninger, H.; Cantatore, G.; Caspers, F.; Castel, J.F.; Çetin, S.A.; Christensen, F.; Cogollos, C.; Dafni, T.; Davenport, M.; Decker, T.A.; Desch, K.; Díez-Ibáñez, D.; Döbrich, B.; Ferrer-Ribas, E.; Fischer, H.; Funk, W.; Galán, J.; García, J.A.; Gardikiotis, A.; Giomataris, I.; Golm, J.; Hailey, C.H.; Hasinoff, M.D.; Hoffmann, D.H.H.; Irastorza, I.G.; Jacoby, J.; Jakobsen, A.C.; Jakovčić, K.; Kaminski, J.; Karuza, M.; Kostoglou, S.; Krieger, C.; Lakić, B.; Laurent, J.M.; Luzón, G.; Malbrunot, C.; Margalejo, C.; Maroudas, M.; Miceli, L.; Mirallas, H.; Navarro, P.; Obis, L.; Özbey, AYDIN; Özbozduman, K.; Papaevangelou, T.; Pérez, O.; Pivovaroff, M.J.; Rosu, M.; Ruiz-Chóliz, E.; Ruz, J.; Schmidt, S.; Schumann, M.; Semertzidis, Y.K.; Solanki, S.K.; Stewart, L.; Vafeiadis, T.; Vogel, J.K.; Zioutas, K.

doi:10.1103/physrevlett.133.221005

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

Altenmüller K., Anastassopoulos V., Arguedas-Cuendis S., Aune S., Baier J., Barth K., ...Daha Fazla

Physical Review Letters, cilt.133, sa.22, 2024 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 133 Sayı: 22
Basım Tarihi: 2024
Doi Numarası: 10.1103/physrevlett.133.221005
Dergi Adı: Physical Review Letters
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Compendex, INSPEC, zbMATH, DIALNET, Nature Index
İstanbul Üniversitesi-Cerrahpaşa Adresli: Evet

Özet

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.