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arXiv · 1403.2547

Search for Photon-Photon Elastic Scattering in the X-ray Region

T. Inada·T. Yamaji·S. Adachi·T. Namba·S. Asai·T. Kobayashi·K. Tamasaku·Y. Tanaka·Y. Inubushi·K. Sawada·M. Yabashi·T. Ishikawa
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Abstract

We report the first results of a search for real photon-photon scattering using X rays. A novel system is developed to split and collide X-ray pulses by applying interferometric techniques. A total of $6.5\times10^{5}$ pulses (each containing about $10^{11}$ photons) from an X-ray Free-Electron Laser are injected into the system. No scattered events are observed, and an upper limit of $1.7\times 10^{-24}$ ${\rm m^{2}}$ (95% C.L.) is obtained on the photon-photon elastic scattering cross section at 6.5 keV.

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T. Inada, T. Yamaji, S. Adachi, T. Namba, S. Asai, T. Kobayashi, K. Tamasaku, Y. Tanaka, Y. Inubushi, K. Sawada, M. Yabashi, T. Ishikawa. 2014-04-18. Search for Photon-Photon Elastic Scattering in the X-ray Region. https://doi.org/10.1016/j.physletb.2014.03.054

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