TY - CONF AU - Friedland, A. AU - Giannotti, M. AU - Wise, M. TI - A new Constraint on the Axion-Photon Coupling IS - DESY-PROC-2013-04 CY - Hamburg PB - Verlag Deutsches Elektronen-Synchrotron M1 - PUBDB-2018-02788 M1 - DESY-PROC-2013-04 SN - 978-3-935702-83-6 T2 - DESY-PROC SP - 73-76 PY - 2013 AB - We show that the emission of axions coupled to photons with g<sub>aγ</sub> ≥ 0.8 × 10<sup>−10</sup>GeV<sup>−1</sup> would eliminate the blue loop stage for stars in the mass window ∼ 8 − 12 M<sub>\odot</sub>. This is excluded by observations of the blue sequences and of Cepheid stars. T2 - 9th Patras Workshop on Axions, WIMPs and WISPs CY - 24 Jun 2013 - 28 Jun 2013, Mainz (Germany) Y2 - 24 Jun 2013 - 28 Jun 2013 M2 - Mainz, Germany KW - Hypothetisches Teilchen (gnd) LB - PUB:(DE-HGF)29 ; PUB:(DE-HGF)8 ; PUB:(DE-HGF)7 DO - DOI:10.3204/DESY-PROC-2013-04/giannotti_maurizio UR - https://bib-pubdb1.desy.de/record/408335 ER -