# Study of the one-way speed of light anisotropy with particle beams

## TL;DR

This paper explores high-precision methods using particle beams to detect potential anisotropy in the one-way speed of light, avoiding clock synchronization issues and achieving extremely sensitive measurements.

## Contribution

It introduces a novel approach utilizing particle beam momentum variations and beam position monitors to measure light speed anisotropy without synchronized clocks.

## Key findings

- Potential to measure SOLA down to 10^{-18} with existing storage rings
- High precision beam monitors can achieve relative accuracy of 10^{-10}
- Multiple experimental configurations are proposed for improved measurements

## Abstract

Concepts of high precision studies of the one-way speed of light anisotropy are discussed. The high energy particle beam allows measurement of a one-way speed of light anisotropy (SOLA) via analysis of the beam momentum variation with sidereal phase without the use of synchronized clocks. High precision beam position monitors could provide accurate monitoring of the beam orbit and determination of the particle beam momentum with relative accuracy on the level of $10^{-10}$, which corresponds to a limit on SOLA of $10^{-18}$ with existing storage rings. A few additional versions of the experiment are also presented.