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.
Titolo: | Limits on Light-Speed Anisotropies from Compton Scattering of High-Energy Electrons |
Autori: | |
Data di pubblicazione: | 2010 |
Rivista: | |
Abstract: | 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. |
Handle: | http://hdl.handle.net/11570/1903065 |
Appare nelle tipologie: | 14.a.1 Articolo su rivista |