Results of a Search for Paraphotons with Intense X-ray Beams at SPring-8

  title={Results of a Search for Paraphotons with Intense X-ray Beams at SPring-8},
  author={Toshiaki Inada and Toshio Namba and Shoji Asai and Tsunetoshi Kobayashi and Y. Tanaka and Kenji Tamasaku and Kei Sawada and Tetsuya Ishikawa},
  journal={Physics Letters B},
Abstract A search for paraphotons, or hidden U ( 1 ) gauge bosons, is performed using an intense X-ray beamline at SPring-8. “Light Shining through a Wall” technique is used in this search. No excess of events above background is observed. A stringent constraint is obtained on the photon–paraphoton mixing angle, χ 8.06 × 10 − 5 (95% C.L.) for 0.04 eV m γ ′ 26 keV . 

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