CAST solar axion search with 3^He buffer gas: Closing the hot dark matter gap
High Energy Physics - Experiment
2014-09-16 v2 Instrumentation and Methods for Astrophysics
Instrumentation and Detectors
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.
Keywords
Cite
@article{arxiv.1307.1985,
title = {CAST solar axion search with 3^He buffer gas: Closing the hot dark matter gap},
author = {M. Arik and S. Aune and K. Barth and A. Belov and S. Borghi and H. Brauninger and G. Cantatore and J. M. Carmona and S. A. Cetin and J. I. Collar and E. Da Riva and T. Dafni and M. Davenport and C. Eleftheriadis and N. Elias and G. Fanourakis and E. Ferrer-Ribas and P. Friedrich and J. Galan and J. A. Garcia and A. Gardikiotis and J. G. Garza and E. N. Gazis and T. Geralis and E. Georgiopoulou and I. Giomataris and S. Gninenko and H. Gomez and M. Gomez Marzoa and E. Gruber and T. Guthorl and R. Hartmann and S. Hauf and F. Haug and M. D. Hasinoff and D. H. H. Hoffmann and F. J. Iguaz and I. G. Irastorza and J. Jacoby and K. Jakovcic and M. Karuza and K. Konigsmann and R. Kotthaus and M. Krcmar and M. Kuster and B. Lakic and P. M. Lang and J. M. Laurent and A. Liolios and A. Ljubicic and V. Lozza and G. Luzon and S. Neff and T. Niinikoski and A. Nordt and T. Papaevangelou and M. J. Pivovaroff and G. Raffelt and H. Riege and A. Rodriguez and M. Rosu and J. Ruz and I. Savvidis and I. Shilon and P. S. Silva and S. K. Solanki and L. Stewart and A. Tomas and M. Tsagri and K. van Bibber and T. Vafeiadis and J. Villar and J. K. Vogel and S. C. Yildiz and K. Zioutas},
journal= {arXiv preprint arXiv:1307.1985},
year = {2014}
}
Comments
5 pages, 2 figures. Last version uploaded