Bounding Isotropic Lorentz Violation Using Synchrotron Losses at LEP

Details Bounding Isotropic Lorentz Violation Using Synchrotron Losses at LEP Bounding Isotropic Lorentz Violation Using Synchrotron Losses at LEP

2009-05-27

arxiv.org/abs/0905.4346v2

Phys. Rev. D 80, 091901(R) (2009)

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages

Scientific paper

10.1103/PhysRevD.80.091901

Some deviations from special relativity--especially isotropic effects--are most efficiently constrained using particles with velocities very close to 1. While there are extremely tight bounds on some of the relevant parameters coming from astrophysical observations, many of these rely on our having an accurate understanding of the dynamics of high-energy sources. It is desirable to have reliable laboratory constraints on these same parameters. The fastest-moving particles in a laboratory were electrons and positrons at LEP. The energetics of the LEP beams were extremely well understood, and measurements of the synchrotron emission rate indicate that that any isotropic deviation of the speed of light from 1 must be smaller than 5 x 10^(-15).

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