Search for Stimulated Photon-Photon Scattering in Vacuum
D. Bernard, F. Moulin, F. Amiranoff, A. Braun, J.P. Chambaret, G., Darpentigny, G. Grillon, S. Ranc, F. Perrone
TL;DR
This study searched for stimulated photon-photon scattering in vacuum at 0.8 eV energy, setting new upper limits on the cross section, but found no evidence of gamma-gamma scattering.
Contribution
First experimental upper limit established for stimulated photon-photon scattering in vacuum at this energy level.
Findings
No evidence of gamma-gamma scattering observed.
Upper limit of cross section set at 1.5 x 10^{-48} cm^2.
Abstract
We have searched for stimulated photon scattering in vacuum at a center of mass photon energy of 0.8 eV. The QED contribution to this process is equivalent to four wave mixing in vacuum. No evidence for gamma-gamma scattering was observed. The corresponding upper limit of the cross section is sigma_Lim=1.5 10^{-48}cm2.
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