Comprehensive analysis on photon-electron Lorentz-violation parameter plane

TL;DR

This paper analyzes constraints on Lorentz-violation parameters for photons and electrons using LHAASO ultra-high-energy photon data, exploring decay thresholds and the parameter space beyond relativity.

Contribution

It provides a comprehensive analysis of the photon-electron Lorentz-violation parameter plane based on LHAASO observations, including decay thresholds and constraints.

Findings

Constraints on photon Lorentz-violation parameters

Constraints on electron Lorentz-violation parameters

Boundaries for Lorentz-violation effects beyond relativity

Abstract

Large High Altitude Air Shower Observatory~(LHAASO) opens the window of ultra-high-energy~(UHE) photon detection, broadens the path of testing basic physical concept such as Lorentz symmetry, and brings possibility of potential high-energy physical phenomenon research such as photon decay and electron decay. Currently, the UHE photons from LHAASO observation set strict constraints on photon and electron Lorentz symmetry violation~(LV) effects. To obtain a global impression of the photon-electron LV parameter plane, we make a detailed analysis for photon decay and electron decay. Our discussion gives the corresponding decay thresholds and energy-momentum distributions in different LV parameter configurations. We get corresponding constraints on photon LV parameter, electron LV parameter and the photon-electron LV parameter plane from LHAASO observation. For the space allowed for LV effect, that is beyond relativity, we also provide corresponding boundaries from LHAASO observation.