Improved search for solar chameleons with a GridPix detector at CAST

Research output: Contribution to journalJournal article – Annual report year: 2019Researchpeer-review

Documents

DOI

  • Author: Anastassopoulos, V.

    University of Patras, Greece

  • Author: Aune, S.

    Universite Paris-Saclay, France

  • Author: Barth, K.

    CERN, Switzerland

  • Author: Belov, A.

    Russian Academy of Sciences, Russian Federation

  • Author: Braueninger, H.

    Max Planck Institute for Extraterrestrial Physics, Germany

  • Author: Cantatore, G

    National Institute for Nuclear Physics, Italy

  • Author: Carmona, J M

    University of Zaragoza, Spain

  • Author: Castel, J. F.

    University of Zaragoza, Spain

  • Author: Cetin, S. A.

    Istanbul Bilgi University, Turkey

  • Author: Christensen, F.

    Astrophysics and Atmospheric Physics, National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: Dafni, T

    University of Zaragoza, Spain

  • Author: Davenport, M

    CERN, Switzerland

  • Author: Dermenev, A.

    Russian Academy of Sciences, Russian Federation

  • Author: Desch, K

    University of Bonn, Germany

  • Author: Döbrich, B

    CERN, Switzerland

  • Author: Eleftheriadis, C

    Aristotle University of Thessaloniki, Greece

  • Author: Fanourakis, G

    Demokritos National Centre for Scientific Research, Greece

  • Author: Ferrer-Ribas, E

    Universite Paris-Saclay, France

  • Author: Fischer, Hanne Lis

    University of Freiburg, Germany

  • Author: Funk, W.

    University of Bonn, Switzerland

  • Author: García, J. A.

    University of Zaragoza, Spain

  • Author: Gardikiotis, A.

    University of Patras, Greece

  • Author: Garza, J. G.

    University of Zaragoza, Spain

  • Author: Gazis, E. N.

    National Technical University of Athens, Greece

  • Author: Geralis, T

    Demokritos National Centre for Scientific Research, Greece

  • Author: Giomataris, I

    Universite Paris-Saclay, France

  • Author: Gninenko, S

    Russian Academy of Sciences, Russian Federation

  • Author: Hailey, C. J.

    Columbia University, United States

  • Author: Hasinoff, M. D.

    University of British Columbia, Canada

  • Author: Hoffmann, D H H

    Xi'an Jiaotong University, China

  • Author: Iguaz, F J

    University of Zaragoza, Spain

  • Author: Irastorza, I G

    University of Zaragoza, Spain

  • Author: Jakobsen, A.

    National Space Institute, Technical University of Denmark, Elektrovej, 2800, Kgs. Lyngby, Denmark

  • Author: Jacoby, J.

    Goethe University Frankfurt, Germany

  • Author: Jakovcic, K.

    Rudjer Boskovic Institute, Croatia

  • Author: Kaminski, J

    University of Bonn, Germany

  • Author: Karuza, M.

    Rudjer Boskovic Institute, Croatia

  • Author: Kostoglou, S.

    University of Bonn, Switzerland

  • Author: Kralj, N.

    Rudjer Boskovic Institute, Croatia

  • Author: Krcmar, M.

    Rudjer Boskovic Institute, Croatia

  • Author: Krieger, C

    University of Bonn, Germany

  • Author: Lakic, B.

    Rudjer Boskovic Institute, Croatia

  • Author: Laurent, J. M.

    University of Bonn, Switzerland

  • Author: Liolios, A.

    Aristotle University of Thessaloniki, Greece

  • Author: Ljubicic, A.

    Rudjer Boskovic Institute, Croatia

  • Author: Luzón, G.

    University of Zaragoza, Spain

  • Author: Maroudas, M.

    University of Patras, Greece

  • Author: Miceli, L.

    Institute for Basic Science, Korea, Republic of

  • Author: Schmidt, S.

    University of Bonn, Germany

  • Author: Vogel, J. K.

    Lawrence Livermore National Laboratory, United States

  • Author: Vretenar, M.

    CERN, Switzerland

  • Author: Wuensch, W.

    CERN, Switzerland

  • Author: Yildiz, S. C.

    Istanbul Bilgi University, Turkey

  • Author: Zioutasa, K.

    CERN, Switzerland

  • Author: Braxab, P.

    University of Patras, Greece

View graph of relations

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 significant 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, βγ#5.7×1010 for 1<βm<106 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 T.
Original languageEnglish
Article number32
JournalJournal of Cosmology and Astroparticle Physics
Volume2019
Issue number1
Number of pages18
ISSN1475-7516
DOIs
Publication statusPublished - 2019

Bibliographical note

© 2019 CERN. Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

CitationsWeb of Science® Times Cited: No match on DOI

    Research areas

  • Dark energy experiments, Modified gravity, Particle physics - cosmology connection, Solar physics

Download statistics

No data available

ID: 168092107