Light from the Hidden Sector
arXiv:0706.2836 · doi:10.1103/PhysRevD.76.115005
Abstract
Optical precision experiments are a powerful tool to explore hidden sectors of a variety of standard-model extensions with potentially tiny couplings to photons. An important example is given by extensions involving an extra light U(1) gauge degree of freedom, so-called paraphotons, with gauge-kinetic mixing with the normal photon. These models naturally give rise to minicharged particles which can be searched for with optical experiments. In this paper, we study the effects of paraphotons in such experiments. We describe in detail the role of a magnetic field for photon-paraphoton oscillations in models with low-mass minicharged particles. In particular, we find that the upcoming light-shining-through-walls experiments are sensitive to paraphotons and can distinguish them from axion-like particles.
34 pages, 9 figures
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- Search for photon oscillations into massive particles
- Probing Hidden Sector Photons through the Higgs Window
- Testing Chameleon Theories with Light Propagating through a Magnetic Field
- Galactic 511 keV line from MeV millicharged dark matter
- Hidden in the Light: Magnetically Induced Afterglow from Trapped Chameleon Fields
- On search for eV hidden sector photons in Super-Kamiokande and CAST experiments
- External Fields as a Probe for Fundamental Physics