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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, 1901, 032. Retrieved from https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2018-243.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0005-D73B-7 Version Permalink: https://hdl.handle.net/21.11116/0000-0005-D73C-6
Genre: Journal Article

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 Creators:
Anastassopoulos, V.1, Author
Aune, S.1, Author
Barth, K.1, Author
Belov, A.1, Author
Bräuninger, H.1, Author
Cantatore, G.1, Author
Carmona, J.M.1, Author
Castel, J.F.1, Author
Cetin, S.A.1, Author
Christensen, F.1, Author
Dafni, T.1, Author
Davenport, M.1, Author
Dermenev, A.1, Author
Desch, K.1, Author
Döbrich, B.1, Author
Eleftheriadis, C.1, Author
Fanourakis, G.1, Author
Ferrer-Ribas, E.1, Author
Fischer, H.1, Author
Funk, W.1, Author
García, J.A.1, AuthorGardikiotis, A.1, AuthorGarza, J.G.1, AuthorGazis, E.N.1, AuthorGeralis, T.1, AuthorGiomataris, I.1, AuthorGninenko, S.1, AuthorHailey, C.J.1, AuthorHasinoff, M.D.1, AuthorHoffmann, D.H.H.1, AuthorIguaz, F.J.1, AuthorIrastorza, I.G.1, AuthorJakobsen, A.1, AuthorJacoby, J.1, AuthorJakovčić, K.1, AuthorKaminski, J.1, AuthorKaruza, M.1, AuthorKostoglou, S.1, AuthorKralj, N.1, AuthorKrčmar, M.1, AuthorKrieger, C.1, AuthorLakić, B.1, AuthorLaurent, J.M.1, AuthorLiolios, A.1, AuthorLjubičić, A.1, AuthorLuzón, G.1, AuthorMaroudas, M.1, AuthorMiceli, L.1, AuthorNeff, S.1, AuthorOrtega, I.1, AuthorPapaevangelou, T.1, AuthorParaschou, K.1, AuthorPivovaroff, M.J.1, AuthorRaffelt, G.1, AuthorRosu, M.1, AuthorRuz, J.1, AuthorRuiz Chóliz, E.1, AuthorSavvidis, I.1, AuthorSchmidt, S.1, AuthorSemertzidis, Y.K.1, AuthorSolanki, S.K.1, AuthorStewart, L.1, AuthorVafeiadis, T.1, AuthorVogel, J.K.1, AuthorVretenar, M.1, AuthorYildiz, S.C.1, AuthorZioutas, K.1, AuthorBrax, P.1, Author more..
Affiliations:
1Max Planck Institute for Physics, Max Planck Society and Cooperation Partners, ou_2253650              

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Free keywords: 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 $12.5\,\mathrm{T}$.

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 Dates: 2019
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: Other: MPP-2018-243
URI: https://publications.mppmu.mpg.de/?action=search&mpi=MPP-2018-243
arXiv: arxiv:1808.00066
URI: https://inspirehep.net/search?p=find+eprint+1808.00066
 Degree: -

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Title: Journal of Cosmology and Astroparticle Physics
  Abbreviation : JCAP
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 1901 Sequence Number: - Start / End Page: 032 Identifier: -