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  Improved search for solar chameleons with a GridPix detector at CAST

Anastassopoulos, V., Aune, S., Barth, K., Belov, A., Bräuninger, H., Cantatore, G., et al. (2019). Improved search for solar chameleons with a GridPix detector at CAST. Journal of Cosmology and Astroparticle Physics, 2019(1): 032. doi:10.1088/1475-7516/2019/01/032.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-5BB4-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-5BB6-7
Genre: Journal Article

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 Creators:
Anastassopoulos, V., Author
Aune, S., Author
Barth, K., Author
Belov, A., Author
Bräuninger, H., Author
Cantatore, G., Author
Carmona, J.M., Author
Castel, J.F., Author
Cetin, S.A., Author
Christensen, F., Author
Dafni, T., Author
Davenport, M., Author
Dermenev, A., Author
Desch, K., Author
Döbrich, B., Author
Eleftheriadis, C., Author
Fanourakis, G., Author
Ferrer-Ribas, E., Author
Fischer, H., Author
Funk, W., Author
Garcboldimatha, J.A. , AuthorGardikiotis, A., AuthorGarza, J.G., AuthorGazis, E.N., AuthorGeralis, T., AuthorGiomataris, I., AuthorGninenko, S., AuthorHailey, C.J., AuthorHasinoff, M.D., AuthorHoffmann, D.H.H., AuthorIguaz, F.J., AuthorIrastorza, I.G., AuthorJakobsen, A., AuthorJacoby, J., AuthorJakovčić, K., AuthorKaminski, J., AuthorKaruza, M., AuthorKostoglou, S., AuthorKralj, N., AuthorKrčmar, M., AuthorKrieger, C., AuthorLakić, B., AuthorLaurent, J. M., AuthorLiolios, A., AuthorLjubičić, A., AuthorLuzón, G., AuthorMaroudas, M., AuthorMiceli, L., AuthorNeff, S., AuthorOrtega, I., AuthorPapaevangelou, T., AuthorParaschou, K., AuthorPivovaroff, M.J., AuthorRaffelt, G., AuthorRosu, M., AuthorRuz, J., AuthorRuiz Chóliz, E. , AuthorSavvidis, I., AuthorSchmidt, S., AuthorSemertzidis, Y.K., AuthorSolanki, Sami K.1, Author              Stewart, L., AuthorVafeiadis, T., AuthorVogel, J.K., AuthorVretenar, M., AuthorWuensch, W., AuthorYildiz, S.C., AuthorZioutas, K., AuthorBrax, P., Author more..
Affiliations:
1Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289              

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 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 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, β γ ∼#5.7×10 10 for 1<β 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 T.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1088/1475-7516/2019/01/032
 Degree: -

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Title: Journal of Cosmology and Astroparticle Physics
Source Genre: Journal
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Publ. Info: Bristol, England : Institute of Physics Pub.
Pages: - Volume / Issue: 2019 (1) Sequence Number: 032 Start / End Page: - Identifier: ISSN: 1475-7516
CoNE: https://pure.mpg.de/cone/journals/resource/111055183238000_1