High energy constraints on Lorentz symmetry violations

Details High energy constraints on Lorentz symmetry violations High energy constraints on Lorentz symmetry violations

2001-10-05

arxiv.org/abs/hep-ph/0110094v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 1 figure, Talk presented at CPT01; the Second Meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, 15-18 Aug. 2

Scientific paper

Lorentz violation at high energies might lead to non linear dispersion relations for the fundamental particles. We analyze observational constraints on these without assuming any a priori equality between the coefficients determining the amount of Lorentz violation for different particle species. We focus on constraints from three high energy processes involving photons and electrons: photon decay, photo-production of electron-positron pairs, and vacuum Cerenkov radiation. We find that cubic momentum terms in the dispersion relations are strongly constrained.

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