Journal article · Preprint article
Improved search for solar chameleons with a GridPix detector at CAST
University of Patras1
National Space Institute, Technical University of Denmark2
University of Bonn3
Aristotle University of Thessaloniki4
Demokritos National Centre for Scientific Research5
University of Freiburg6
National Technical University of Athens7
Columbia University8
University of British Columbia9
Xi'an Jiaotong University10
Goethe University Frankfurt11
Université Paris-Saclay12
Rudjer Boskovic Institute13
Institute for Basic Science14
Lawrence Livermore National Laboratory15
CERN16
Russian Academy of Sciences17
Max Planck Institute for Extraterrestrial Physics18
National Institute for Nuclear Physics19
University of Zaragoza20
Istanbul Bilgi University21
Astrophysics and Atmospheric Physics, National Space Institute, Technical University of Denmark22
...and 12 moreWe 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.
| Language: | English |
|---|---|
| Publisher: | Institute of Physics Pub. |
| Year: | 2019 |
| Pages: | 032-032 |
| ISBN: | 1943580723 and 9781943580729 |
| ISSN: | 14757516 |
| Types: | Journal article and Preprint article |
| DOI: | 10.1088/1475-7516/2019/01/032 |
| ORCIDs: | Christensen, F. |
