Search for Solar Axions by the CERN Axion Solar Telescope with He3 Buffer Gas: Closing the Hot Dark Matter Gap

Arik, M.; Aune, S.; Barth, K.; Belov, A.; Borghi, S.; Brauninger, H.; Cantatore, Giovanni; Carmona, J. M.; Cetin, S. A.; Da Riva, J. I. Collar E.; Dafni, T.; Davenport, M.; Eleftheriadis, C.; Elias, N.; Fanourakis, G.; Ferrer Ribas, E.; Friedrich, P.; Galan, J.; Garcia, J. A.; Gardikiotis, A.; Garza, J. G.; Gazis, E. N.; Geralis, T.; Georgiopoulou, E.; Giomataris, I.; Gninenko, S.; Gomez, H.; Gomez Marzoa, M.; Gruber, E.; Guthorl, T.; Hartmann, R.; Hauf, S.; Haug, F.; Hasinoff, M. D.; Hoffmann, D. H. H.; Iguaz, F. J.; Irastorza, I. G.; Jacoby, J.; Jakovcic, K.; Karuza, M.; Konigsmann, K.; Kotthaus, R.; Krcmar, M.; Kuster, M.; Lakic, B.; Lang, P. M.; Laurent, J. M.; Liolios, A.; Ljubicic, A.; Lozza, V.; Luzon, G.; Neff, S.; Niinikoski, T.; Nordt, A.; Papaevangelou, T.; Pivovaroff, M. J.; Raffelt, G.; Riege, H.; Rodriguez, A.; Rosu, M.; Ruz, J.; Savvidis, I.; Shilon, I.; Silva, P. S.; Solanki, S. K.; Stewart, L.; Tomas, A.; Tsagri, M.; van Bibber, K.; Vafeiadis, T.; Villar, J.; Vogel, J. K.; Yildiz, S. C.; Zioutas, K.

doi:10.1103/PhysRevLett.112.091302

The CERN Axion Solar Telescope (CAST) has finished its search for solar axions with 3^He buffer gas, covering the search range 0.64 eV < m_a <1.17 eV. This closes the gap to the cosmological hot dark matter limit and actually overlaps with it. From the absence of excess X-rays when the magnet was pointing to the Sun we set a typical upper limit on the axion-photon coupling of g_ag < 3.3 x 10^{-10} GeV^{-1} at 95% CL, with the exact value depending on the pressure setting. Future direct solar axion searches will focus on increasing the sensitivity to smaller values of g_a, for example by the currently discussed next generation helioscope IAXO.

Titolo:	Search for Solar Axions by the CERN Axion Solar Telescope with He3 Buffer Gas: Closing the Hot Dark Matter Gap
Autori:	M. Arik S. Aune K. Barth A. Belov S. Borghi H. Brauninger CANTATORE, GIOVANNI J. M. Carmona S. A. Cetin J. I. Collar E. Da Riva T. Dafni M. Davenport C. Eleftheriadis N. Elias G. Fanourakis E. Ferrer Ribas P. Friedrich J. Galan J. A. Garcia A. Gardikiotis J. G. Garza E. N. Gazis T. Geralis E. Georgiopoulou I. Giomataris S. Gninenko H. Gomez M. Gomez Marzoa E. Gruber T. Guthorl R. Hartmann S. Hauf F. Haug M. D. Hasinoff D. H. H. Hoffmann F. J. Iguaz I. G. Irastorza J. Jacoby K. Jakovcic M. Karuza K. Konigsmann R. Kotthaus M. Krcmar M. Kuster B. Lakic P. M. Lang J. M. Laurent A. Liolios A. Ljubicic V. Lozza G. Luzon S. Neff T. Niinikoski A. Nordt T. Papaevangelou M. J. Pivovaroff G. Raffelt H. Riege A. Rodriguez M. Rosu J. Ruz I. Savvidis I. Shilon P. S. Silva S. K. Solanki L. Stewart A. Tomas M. Tsagri K. van Bibber T. Vafeiadis J. Villar J. K. Vogel S. C. Yildiz K. Zioutas mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2014
Rivista:	PHYSICAL REVIEW LETTERS
Abstract:	The CERN Axion Solar Telescope (CAST) has finished its search for solar axions with 3^He buffer gas, covering the search range 0.64 eV < m_a <1.17 eV. This closes the gap to the cosmological hot dark matter limit and actually overlaps with it. From the absence of excess X-rays when the magnet was pointing to the Sun we set a typical upper limit on the axion-photon coupling of g_ag < 3.3 x 10^{-10} GeV^{-1} at 95% CL, with the exact value depending on the pressure setting. Future direct solar axion searches will focus on increasing the sensitivity to smaller values of g_a, for example by the currently discussed next generation helioscope IAXO.
Handle:	http://hdl.handle.net/11368/2707074
Digital Object Identifier (DOI):	http://dx.doi.org/10.1103/PhysRevLett.112.091302
Appare nelle tipologie:	1.1 Articolo in Rivista

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