CAST constraints on the axion-electron coupling (CROSBI ID 193492)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Barth, K. ; Belov, A. ; Beltran, B. ; Bräuninger, H. ; Carmona, J.M. ; Collar, J.I. ; Dafni, T. ; Davenport, M. ; Di Lella, L. ; Eleftheriadis, C. ; Englhauser, J. ; Fanourakis, G. ; Ferrer-Ribas, E. ; Fischer, H. ; Franz, J. ; Friedrich, P. ; Galán, J. ; García, J.A. ; Geralis, T. ; Giomataris, I. ; Gninenko, S. ; Gómez, H. ; Hasinoff, M.D. ; Heinsius, F.H. ; Hoffmann, D.H.H. ; Irastorza, I.G. ; Jacoby, J. ; Jakovčić, Krešimir ; Kang, D. ; Königsmann, K. ; Kotthaus, R. ; Kousouris, K. ; Krčmar, Milica ; Kuster, M. ; Lakić, Biljana ; Liolios, A. ; Ljubičić, Ante ; Lutz, G. ; Luzón, G. ; Miller, D.W. ; Papaevangelou, T. ; Pivovaroff, M.J. ; Raffelt, G. ; Redondo, J. ; Riege, H. ; Rodríguez, A. ; Ruz, J. ; Savvidis, I. ; Semertzidis, Y. ; Stewart, L. ; Van Bibber, K. ; Vieira, J.D. ; Villar, J.A. ; Vogel, J.K. ; Walckiers, L. ; Zioutas, K.
engleski
CAST constraints on the axion-electron coupling
In non-hadronic axion models, which have a tree-level axion-electron interaction, the Sun produces a strong axion flux by bremsstrahlung, Compton scattering, and axio-recombination, the BCA processes. Based on a new calculation of this flux, including for the first time axio-recombination, we derive limits on the axion-electron Yukawa coupling g_ae and axion-photon interaction strength g_a, gamma using the CAST phase-I data (vacuum phase). For m_a < 10 meV we find g_a, gamma*g_ae < 8.1 * 10^(-23) GeV^(-1) at 95% CL. We stress that a next-generation axion helioscope such as the proposed IAXO could push this sensitivity into a range beyond stellar energy-loss limits and test the hypothesis that white-dwarf cooling is dominated by axion emission.
axions; dark matter experiments; solar physics; white and brown dwarfs
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Podaci o izdanju
5
2013.
1-10
objavljeno
1475-7516
10.1088/1475-7516/2013/05/010
