| Article | |
| Report number | arXiv:1808.00066 |
| Title | Improved Search for Solar Chameleons with a GridPix Detector at CAST |
| Author(s) |
Anastassopoulos, V. (Patras U.) ; Aune, S. (IRFU, Saclay) ; Barth, K. (CERN) ; Belov, A. (Moscow, INR) ; Bräuninger, H. (Garching, Max Planck Inst., MPE) ; Cantatore, G. (INFN, Trieste ; Trieste U.) ; Carmona, J.M. (U. Zaragoza (main)) ; Castel, J.F. (U. Zaragoza (main)) ; Cetin, S.A. (Istanbul Bilgi U.) ; Christensen, F. (Denmark, Tech. U.) ; Dafni, T. (U. Zaragoza (main)) ; Davenport, M. (CERN) ; Dermenev, A. (Moscow, INR) ; Desch, K. (Bonn U.) ; Döbrich, B. (CERN) ; Eleftheriadis, C. (Aristotle U., Thessaloniki) ; Fanourakis, G. (Democritos Nucl. Res. Ctr.) ; Ferrer-Ribas, E. (IRFU, Saclay) ; Fischer, H. (Freiburg U.) ; Funk, W. (CERN) ; García, J.A. (Zaragoza U.) ; Gardikiotis, A. (Patras U.) ; Garza, J.G. (U. Zaragoza (main)) ; Gazis, E.N. (Natl. Tech. U., Athens) ; Geralis, T. (Democritos Nucl. Res. Ctr.) ; Giomataris, I. (IRFU, Saclay) ; Gninenko, S. (Moscow, INR) ; Hailey, C.J. (Columbia U.) ; Hasinoff, M.D. (British Columbia U.) ; Hoffmann, D.H.H. (Xian Jiaotong U.) ; Iguaz, F.J. (U. Zaragoza (main)) ; Irastorza, I.G. (U. Zaragoza (main)) ; Jakobsen, A. (Denmark, Tech. U.) ; Jacoby, J. (Frankfurt U.) ; Jakovčić, K. (Boskovic Inst., Zagreb) ; Kaminski, J. (Bonn U.) ; Karuza, M. (INFN, Trieste ; Rijeka U.) ; Kostoglou, S. (CERN) ; Kralj, N. (Rijeka U.) ; Krčmar, M. (Boskovic Inst., Zagreb) ; Krieger, C. (Bonn U.) ; Lakić, B. (Boskovic Inst., Zagreb) ; Laurent, J.M. (CERN) ; Liolios, A. (Aristotle U., Thessaloniki) ; Ljubičić, A. (Boskovic Inst., Zagreb) ; Luzón, G. (U. Zaragoza (main)) ; Maroudas, M. (Patras U.) ; Miceli, L. (IBS, Daejeon, CAPP) ; Neff, S. (Darmstadt, Tech. U.) ; Ortega, I. ; Papaevangelou, T. (IRFU, Saclay) ; Paraschou, K. (Aristotle U., Thessaloniki) ; Pivovaroff, M.J. (LLNL, Livermore) ; Raffelt, G. (Munich, Max Planck Inst.) ; Rosu, M. (Darmstadt, Tech. U.) ; Ruz, J. (LLNL, Livermore) ; Ruiz Chóliz, E. (Zaragoza U.) ; Savvidis, I. (Aristotle U., Thessaloniki) ; Schmidt, S. (Bonn U.) ; Semertzidis, Y.K. (IBS, Daejeon ; KAIST, Taejon) ; Solanki, S.K. (Gottingen, Max Planck Inst.) ; Stewart, L. (CERN) ; Vafeiadis, T. (CERN) ; Vogel, J.K. (LLNL, Livermore) ; Vretenar, M. (Rijeka U.) ; Wuensch, W. (CERN) ; Yildiz, S.C. (Istanbul Bilgi U.) ; Zioutas, K. (Patras U. ; CERN) ; Brax, P. (IPhT, Saclay) |
| Publication | 2019-01-16 |
| Imprint | 2018-07-31 |
| Number of pages | 19 |
| Note | Submitted to JCAP 19 pages, 12 figures, 3 tables |
| In: | JCAP 1901 (2019) 032 |
| DOI | 10.1088/1475-7516/2019/01/032 (publication) |
| Subject category | physics.ins-det ; Detectors and Experimental Techniques ; hep-ex ; Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CAST |
| Abstract | We report on a new search for solar chameleons with the CERN Axion Solar Telescope (CAST). A GridPix detector was used to search for soft X-ray photons in the energy range from 200 eV to 10 keV from converted solar chameleons. No signiffcant excess over the expected background has been observed in the data taken in 2014 and 2015. We set an improved limit on the chameleon photon coupling, $\beta_\gamma < 5.7\times10^{10}$ for $1<\beta_\mathrm{m}<10^6$ at 95% C.L. improving our previous results by a factor two and for the first time reaching sensitivity below the solar luminosity bound for tachocline magnetic fields up to $12.5\,\mathrm{T}$. |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2019 CERN (License: CC-BY-3.0) |
Corresponding record in: Inspire
ჩანაწერი შექმნილია 2018-08-10, ბოლოს შესწორებულია 2024-05-02
PDF