2008/01/22 by Javier Redondo · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle Detector Development and Performance #Solar and Space Plasma Dynamics #astro-ph #hep-ex #hep-ph
paper · pdf · doi:10.1088/1475-7516/2008/07/008
published as JCAP0807:008,2008 · 25 pages, 8 figures; Minor comments and one figure added. Submitted to JCAP
arxiv created 2008/01/22 · openalex publication_date 2008/07/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
The flux of hypothetical 'hidden photons' from the Sun is computed under the assumption that they interact with normal matter only through kinetic mixing with the ordinary standard model photon. Requiring that the exotic luminosity is smaller than the standard photon luminosity provides limits for the mixing parameter down to , depending on the hidden photon mass. Furthermore, it is pointed out that helioscopes looking for solar axions are also very sensitive to hidden photons. The recent results of the CAST collaboration are used to further constrain the mixing parameter χ at low masses ( m γ ' <1 eV) where the luminosity bound is weaker. In this regime the solar hidden photon flux has a sizable contribution of longitudinally polarized hidden photons of low energy which are invisible for current helioscopes.