Lorentz Violation in Deep Inelastic Electron-Proton Scattering

TL;DR

This paper investigates potential Lorentz violation effects in deep inelastic electron-proton scattering, using data from HERA to set constraints on Lorentz-violating coefficients through sidereal time analysis.

Contribution

It introduces a novel sidereal time analysis method applied to existing deep inelastic scattering data to constrain Lorentz violation in the quark sector.

Findings

Strong constraints on Lorentz-violating coefficients derived from HERA data.

Demonstrates the feasibility of sidereal time analysis in high-energy scattering experiments.

Shows Lorentz violation effects are detectable or tightly constrained in deep inelastic scattering.

Abstract

Lorentz violation in the quark sector induces a sidereal time dependence in electron-proton, proton-antiproton and proton-proton cross sections. At high energies nonperturbative effects are buried in universal nucleon parton distribution functions and Lorentz violating effects are calculable in perturbation theory. We focus on deep inelastic electron-proton scattering data collected from ZEUS and H1 at HERA and show that a sideral time analysis of these events is able to set strong constraints on most of the coefficients we consider.