Improved search for solar chameleons with a GridPix detector at CAST

V. Anastassopoulos, S. Aune, K. Barth, A. Belov, H. Braueninger, G. Cantatore, J. M. Carmona, J. F. Castel, S. A. Cetin, F. Christensen, T. Dafni, M. Davenport, A. Dermenev, K. Desch, B. Doebrich, C. Eleftheriadis, G. Fanourakis, E. Ferrer-Ribas, Hanne Lis Fischer, W. Funk & 35 others J. A. Garcia, A. Gardikiotis, J. G. Garza, E. N. Gazis, T. Geralis, I Giomataris, S. Gninenko, C. J. Hailey, M. D. Hasinoff, D. H. H. Hoffmann, F. J. Iguaz, I. G. Irastorza, A. Jakobsen, J. Jacoby, K. Jakovcic, J. Kaminski, M. Karuza, S. Kostoglou, N. Kralj, M. Krcmar, C. Krieger*, B. Lakic, J. M. Laurent, A. Liolios, A. Ljubicic, G. Luzon, M. Maroudas, L. Miceli, S. Schmidt, J. K. Vogel, M. Vretenar, W. Wuensch, S. C. Yildiz, K. Zioutasa, P. Braxab

*Corresponding author for this work

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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, 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.

Keywords

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

Cite this

Anastassopoulos, V., Aune, S., Barth, K., Belov, A., Braueninger, H., Cantatore, G., ... Braxab, P. (2019). Improved search for solar chameleons with a GridPix detector at CAST. Journal of Cosmology and Astroparticle Physics, 2019(1), [32]. https://doi.org/10.1088/1475-7516/2019/01/032
Anastassopoulos, V. ; Aune, S. ; Barth, K. ; Belov, A. ; Braueninger, H. ; Cantatore, G. ; Carmona, J. M. ; Castel, J. F. ; Cetin, S. A. ; Christensen, F. ; Dafni, T. ; Davenport, M. ; Dermenev, A. ; Desch, K. ; Doebrich, B. ; Eleftheriadis, C. ; Fanourakis, G. ; Ferrer-Ribas, E. ; Fischer, Hanne Lis ; Funk, W. ; Garcia, J. A. ; Gardikiotis, A. ; Garza, J. G. ; Gazis, E. N. ; Geralis, T. ; Giomataris, I ; Gninenko, S. ; Hailey, C. J. ; Hasinoff, M. D. ; Hoffmann, D. H. H. ; Iguaz, F. J. ; Irastorza, I. G. ; Jakobsen, A. ; Jacoby, J. ; Jakovcic, K. ; Kaminski, J. ; Karuza, M. ; Kostoglou, S. ; Kralj, N. ; Krcmar, M. ; Krieger, C. ; Lakic, B. ; Laurent, J. M. ; Liolios, A. ; Ljubicic, A. ; Luzon, G. ; Maroudas, M. ; Miceli, L. ; Schmidt, S. ; Vogel, J. K. ; Vretenar, M. ; Wuensch, W. ; Yildiz, S. C. ; Zioutasa, K. ; Braxab, P. . / Improved search for solar chameleons with a GridPix detector at CAST. In: Journal of Cosmology and Astroparticle Physics. 2019 ; Vol. 2019, No. 1.
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keywords = "Dark energy experiments, Modified gravity, Particle physics - cosmology connection, Solar physics",
author = "V. Anastassopoulos and S. Aune and K. Barth and A. Belov and H. Braueninger and G. Cantatore and Carmona, {J. M.} and Castel, {J. F.} and Cetin, {S. A.} and F. Christensen and T. Dafni and M. Davenport and A. Dermenev and K. Desch and B. Doebrich and C. Eleftheriadis and G. Fanourakis and E. Ferrer-Ribas and Fischer, {Hanne Lis} and W. Funk and Garcia, {J. A.} and A. Gardikiotis and Garza, {J. G.} and Gazis, {E. N.} and T. Geralis and I Giomataris and S. Gninenko and Hailey, {C. J.} and Hasinoff, {M. D.} and Hoffmann, {D. H. H.} and Iguaz, {F. J.} and Irastorza, {I. G.} and A. Jakobsen and J. Jacoby and K. Jakovcic and J. Kaminski and M. Karuza and S. Kostoglou and N. Kralj and M. Krcmar and C. Krieger and B. Lakic and Laurent, {J. M.} and A. Liolios and A. Ljubicic and G. Luzon and M. Maroudas and L. Miceli and S. Schmidt and Vogel, {J. K.} and M. Vretenar and W. Wuensch and Yildiz, {S. C.} and K. Zioutasa and P. Braxab",
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Anastassopoulos, V, Aune, S, Barth, K, Belov, A, Braueninger, H, Cantatore, G, Carmona, JM, Castel, JF, Cetin, SA, Christensen, F, Dafni, T, Davenport, M, Dermenev, A, Desch, K, Doebrich, B, Eleftheriadis, C, Fanourakis, G, Ferrer-Ribas, E, Fischer, HL, Funk, W, Garcia, JA, Gardikiotis, A, Garza, JG, Gazis, EN, Geralis, T, Giomataris, I, Gninenko, S, Hailey, CJ, Hasinoff, MD, Hoffmann, DHH, Iguaz, FJ, Irastorza, IG, Jakobsen, A, Jacoby, J, Jakovcic, K, Kaminski, J, Karuza, M, Kostoglou, S, Kralj, N, Krcmar, M, Krieger, C, Lakic, B, Laurent, JM, Liolios, A, Ljubicic, A, Luzon, G, Maroudas, M, Miceli, L, Schmidt, S, Vogel, JK, Vretenar, M, Wuensch, W, Yildiz, SC, Zioutasa, K & Braxab, P 2019, 'Improved search for solar chameleons with a GridPix detector at CAST', Journal of Cosmology and Astroparticle Physics, vol. 2019, no. 1, 32. https://doi.org/10.1088/1475-7516/2019/01/032

Improved search for solar chameleons with a GridPix detector at CAST. / Anastassopoulos, V.; Aune, S.; Barth, K.; Belov, A.; Braueninger, H.; Cantatore, G.; Carmona, J. M.; Castel, J. F.; Cetin, S. A.; Christensen, F.; Dafni, T.; Davenport, M.; Dermenev, A.; Desch, K.; Doebrich, B.; Eleftheriadis, C.; Fanourakis, G.; Ferrer-Ribas, E.; Fischer, Hanne Lis; Funk, W.; Garcia, J. A.; Gardikiotis, A.; Garza, J. G.; Gazis, E. N.; Geralis, T.; Giomataris, I; Gninenko, S.; Hailey, C. J.; Hasinoff, M. D.; Hoffmann, D. H. H.; Iguaz, F. J.; Irastorza, I. G.; Jakobsen, A.; Jacoby, J.; Jakovcic, K.; Kaminski, J.; Karuza, M.; Kostoglou, S.; Kralj, N.; Krcmar, M.; Krieger, C.; Lakic, B.; Laurent, J. M.; Liolios, A.; Ljubicic, A.; Luzon, G.; Maroudas, M.; Miceli, L.; Schmidt, S.; Vogel, J. K.; Vretenar, M. ; Wuensch, W. ; Yildiz, S. C. ; Zioutasa, K. ; Braxab, P. .

In: Journal of Cosmology and Astroparticle Physics, Vol. 2019, No. 1, 32, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Improved search for solar chameleons with a GridPix detector at CAST

AU - Anastassopoulos, V.

AU - Aune, S.

AU - Barth, K.

AU - Belov, A.

AU - Braueninger, H.

AU - Cantatore, G.

AU - Carmona, J. M.

AU - Castel, J. F.

AU - Cetin, S. A.

AU - Christensen, F.

AU - Dafni, T.

AU - Davenport, M.

AU - Dermenev, A.

AU - Desch, K.

AU - Doebrich, B.

AU - Eleftheriadis, C.

AU - Fanourakis, G.

AU - Ferrer-Ribas, E.

AU - Fischer, Hanne Lis

AU - Funk, W.

AU - Garcia, J. A.

AU - Gardikiotis, A.

AU - Garza, J. G.

AU - Gazis, E. N.

AU - Geralis, T.

AU - Giomataris, I

AU - Gninenko, S.

AU - Hailey, C. J.

AU - Hasinoff, M. D.

AU - Hoffmann, D. H. H.

AU - Iguaz, F. J.

AU - Irastorza, I. G.

AU - Jakobsen, A.

AU - Jacoby, J.

AU - Jakovcic, K.

AU - Kaminski, J.

AU - Karuza, M.

AU - Kostoglou, S.

AU - Kralj, N.

AU - Krcmar, M.

AU - Krieger, C.

AU - Lakic, B.

AU - Laurent, J. M.

AU - Liolios, A.

AU - Ljubicic, A.

AU - Luzon, G.

AU - Maroudas, M.

AU - Miceli, L.

AU - Schmidt, S.

AU - Vogel, J. K.

AU - Vretenar, M.

AU - Wuensch, W.

AU - Yildiz, S. C.

AU - Zioutasa, K.

AU - Braxab, P.

N1 - © 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.

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Dark energy experiments

KW - Modified gravity

KW - Particle physics - cosmology connection

KW - Solar physics

U2 - 10.1088/1475-7516/2019/01/032

DO - 10.1088/1475-7516/2019/01/032

M3 - Journal article

VL - 2019

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 1

M1 - 32

ER -