Limits on Light-Speed Anisotropies from Compton Scattering of High-Energy Electrons

作者：Bocquet J P^*; Moricciani D; Bellini V; Beretta M; Casano L; D'Angelo A; Di Salvo R; Fantini A; Franco D; Gervino G; Ghio F; Giardina G; Girolami B; Giusa A; Gurzadyan V G; Kashin A; Knyazyan S; Lapik A; Lehnert R; Sandri P Levi; Lleres A; Mammoliti F; Mandaglio G; Manganaro M; Margarian A; Mehrabyan S; Messi R; Nedorezov V; Perrin C; Randieri C; Rebreyend D; Rudnev N; Russo G; Schaerf C; Sperduto M L; Sutera M C

来源：Physical Review Letters, 2010, 104(24): 241601.

DOI：10.1103/PhysRevLett.104.241601

The possibility of anisotropies in the speed of light relative to the limiting speed of electrons is considered. The absence of sidereal variations in the energy of Compton-edge photons at the European Synchrotron Radiation Facility's GRAAL facility constrains such anisotropies representing the first nonthreshold collision-kinematics study of Lorentz violation. When interpreted within the minimal standard-model extension, this result yields the two-sided limit of 1.6 x 10-(14) at 95% confidence level on a combination of the parity-violating photon and electron coefficients ((kappa) over tilde (o+))(YZ), ((kappa) over tilde (o+))(ZX), c(TX), and c(TY). This new constraint provides an improvement over previous bounds by 1 order of magnitude.

• 出版日期2010-6-17