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Title: Search for chameleons with CAST

In this paper we present a search for (solar) chameleons with the CERN Axion Solar Telescope (CAST). This novel experimental technique, in the field of dark energy research, exploits both the chameleon coupling to matter (β m) and to photons (β γ) via the Primakoff effect. By reducing the X-ray detection energy threshold used for axions from 1 keV to 400 eV CAST became sensitive to the converted solar chameleon spectrum which peaks around 600 eV. Even though we have not observed any excess above background, we can provide a 95% C.L. limit for the coupling strength of chameleons to photons of β γ≲10 11 for 1< β m < 10 6.
Authors:
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Publication Date:
Report Number(s):
LLNL-JRNL-675560
Journal ID: ISSN 0370-2693
Grant/Contract Number:
AC52-07NA27344
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 749; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Contributing Orgs:
CAST Collaboration
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; chameleon; CAST; SDD; X-ray; tachocline; dark energy
OSTI Identifier:
1203807
Alternate Identifier(s):
OSTI ID: 1236133

Anastassopoulos, V., Arik, M., Aune, S., Barth, K., Belov, A., Bräuninger, H., Cantatore, G., Carmona, J. M., Cetin, S. A., Christensen, F., Collar, J. I., Dafni, T., Davenport, M., Desch, K., Dermenev, A., Eleftheriadis, C., Fanourakis, G., Ferrer-Ribas, E., Friedrich, P., Galán, J., García, J. A., Gardikiotis, A., Garza, J. G., Gazis, E. N., Geralis, T., Giomataris, I., Hailey, C., Haug, F., Hasinoff, M. D., Hoffmann, D. H. H., Iguaz, F. J., Irastorza, I. G., Jacoby, J., Jakobsen, A., Jakovčić, K., Kaminski, J., Karuza, M., Kavuk, M., Krčmar, M., Krieger, C., Krüger, A., Lakić, B., Laurent, J. M., Liolios, A., Ljubičić, A., Luzón, G., Neff, S., Ortega, I., Papaevangelou, T., Pivovaroff, M. J., Raffelt, G., Riege, H., Rosu, M., Ruz, J., Savvidis, I., Solanki, S. K., Vafeiadis, T., Villar, J. A., Vogel, J. K., Yildiz, S. C., Zioutas, K., Brax, P., Lavrentyev, I., and Upadhye, A.. Search for chameleons with CAST. United States: N. p., Web. doi:10.1016/j.physletb.2015.07.049.
Anastassopoulos, V., Arik, M., Aune, S., Barth, K., Belov, A., Bräuninger, H., Cantatore, G., Carmona, J. M., Cetin, S. A., Christensen, F., Collar, J. I., Dafni, T., Davenport, M., Desch, K., Dermenev, A., Eleftheriadis, C., Fanourakis, G., Ferrer-Ribas, E., Friedrich, P., Galán, J., García, J. A., Gardikiotis, A., Garza, J. G., Gazis, E. N., Geralis, T., Giomataris, I., Hailey, C., Haug, F., Hasinoff, M. D., Hoffmann, D. H. H., Iguaz, F. J., Irastorza, I. G., Jacoby, J., Jakobsen, A., Jakovčić, K., Kaminski, J., Karuza, M., Kavuk, M., Krčmar, M., Krieger, C., Krüger, A., Lakić, B., Laurent, J. M., Liolios, A., Ljubičić, A., Luzón, G., Neff, S., Ortega, I., Papaevangelou, T., Pivovaroff, M. J., Raffelt, G., Riege, H., Rosu, M., Ruz, J., Savvidis, I., Solanki, S. K., Vafeiadis, T., Villar, J. A., Vogel, J. K., Yildiz, S. C., Zioutas, K., Brax, P., Lavrentyev, I., & Upadhye, A.. Search for chameleons with CAST. United States. doi:10.1016/j.physletb.2015.07.049.
Anastassopoulos, V., Arik, M., Aune, S., Barth, K., Belov, A., Bräuninger, H., Cantatore, G., Carmona, J. M., Cetin, S. A., Christensen, F., Collar, J. I., Dafni, T., Davenport, M., Desch, K., Dermenev, A., Eleftheriadis, C., Fanourakis, G., Ferrer-Ribas, E., Friedrich, P., Galán, J., García, J. A., Gardikiotis, A., Garza, J. G., Gazis, E. N., Geralis, T., Giomataris, I., Hailey, C., Haug, F., Hasinoff, M. D., Hoffmann, D. H. H., Iguaz, F. J., Irastorza, I. G., Jacoby, J., Jakobsen, A., Jakovčić, K., Kaminski, J., Karuza, M., Kavuk, M., Krčmar, M., Krieger, C., Krüger, A., Lakić, B., Laurent, J. M., Liolios, A., Ljubičić, A., Luzón, G., Neff, S., Ortega, I., Papaevangelou, T., Pivovaroff, M. J., Raffelt, G., Riege, H., Rosu, M., Ruz, J., Savvidis, I., Solanki, S. K., Vafeiadis, T., Villar, J. A., Vogel, J. K., Yildiz, S. C., Zioutas, K., Brax, P., Lavrentyev, I., and Upadhye, A.. 2015. "Search for chameleons with CAST". United States. doi:10.1016/j.physletb.2015.07.049.
@article{osti_1203807,
title = {Search for chameleons with CAST},
author = {Anastassopoulos, V. and Arik, M. and Aune, S. and Barth, K. and Belov, A. and Bräuninger, H. and Cantatore, G. and Carmona, J. M. and Cetin, S. A. and Christensen, F. and Collar, J. I. and Dafni, T. and Davenport, M. and Desch, K. and Dermenev, A. and Eleftheriadis, C. and Fanourakis, G. and Ferrer-Ribas, E. and Friedrich, P. and Galán, J. and García, J. A. and Gardikiotis, A. and Garza, J. G. and Gazis, E. N. and Geralis, T. and Giomataris, I. and Hailey, C. and Haug, F. and Hasinoff, M. D. and Hoffmann, D. H. H. and Iguaz, F. J. and Irastorza, I. G. and Jacoby, J. and Jakobsen, A. and Jakovčić, K. and Kaminski, J. and Karuza, M. and Kavuk, M. and Krčmar, M. and Krieger, C. and Krüger, A. and Lakić, B. and Laurent, J. M. and Liolios, A. and Ljubičić, A. and Luzón, G. and Neff, S. and Ortega, I. and Papaevangelou, T. and Pivovaroff, M. J. and Raffelt, G. and Riege, H. and Rosu, M. and Ruz, J. and Savvidis, I. and Solanki, S. K. and Vafeiadis, T. and Villar, J. A. and Vogel, J. K. and Yildiz, S. C. and Zioutas, K. and Brax, P. and Lavrentyev, I. and Upadhye, A.},
abstractNote = {In this paper we present a search for (solar) chameleons with the CERN Axion Solar Telescope (CAST). This novel experimental technique, in the field of dark energy research, exploits both the chameleon coupling to matter (βm) and to photons (βγ) via the Primakoff effect. By reducing the X-ray detection energy threshold used for axions from 1 keV to 400 eV CAST became sensitive to the converted solar chameleon spectrum which peaks around 600 eV. Even though we have not observed any excess above background, we can provide a 95% C.L. limit for the coupling strength of chameleons to photons of βγ≲1011 for 1< βm < 106.},
doi = {10.1016/j.physletb.2015.07.049},
journal = {Physics Letters. Section B},
number = C,
volume = 749,
place = {United States},
year = {2015},
month = {7}
}