Limits on isotropic Lorentz violation in QED from collider physics

Details Limits on isotropic Lorentz violation in QED from collider physics Limits on isotropic Lorentz violation in QED from collider physics

2008-09-19

arxiv.org/abs/0809.3442v2

Phys.Rev.D80:036010,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Replaced with final version published in PRD

Scientific paper

10.1103/PhysRevD.80.036010

We consider the possibility that Lorentz violation can generate differences between the limiting velocities of light and charged matter. Such effects would lead to efficient vacuum Cherenkov radiation or rapid photon decay. The absence of such effects for 104.5 GeV electrons at the Large Electron Positron collider and for 300 GeV photons at the Tevatron therefore constrains this type of Lorentz breakdown. Within the context of the standard-model extension, these ideas imply an experimental bound at the level of -5.8 x 10^{-12} <= \tilde{\kappa}_{tr}-(4/3)c_e^{00} <= 1.2 x 10^{-11} tightening existing laboratory measurements by 3-4 orders of magnitude. Prospects for further improvements with terrestrial and astrophysical methods are discussed.

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