Signals for CPT and Lorentz Violation in Neutral-Meson Oscillations

TL;DR

This paper investigates potential experimental signals of CPT and Lorentz violation in neutral-meson oscillations within a standard-model extension, highlighting how these effects depend on meson momentum and vary with experimental setups.

Contribution

It provides a comprehensive analysis of CPT and Lorentz violation signals in neutral-meson systems, considering momentum dependence and diurnal variations in a general theoretical framework.

Findings

CPT observables can depend on meson momentum.

Diurnal variations in CPT signals are possible.

Effects vary with experimental configurations.

Abstract

Experimental signals for indirect CPT violation in the neutral-meson systems are studied in the context of a general CPT- and Lorentz-violating standard-model extension. In this explicit theory, some CPT observables depend on the meson momentum and exhibit diurnal variations. The consequences for CPT tests vary significantly with the specific experimental scenario. The wide range of possible effects is illustrated for two types of CPT experiment presently underway, one involving boosted uncorrelated kaons and the other involving unboosted correlated kaon pairs.