# Enhancements and suppressions of CP violating effect in the nucleons, nuclei, and atoms

## TL;DR

This paper reviews how CP violation effects, detectable via electric dipole moments (EDMs), are enhanced or suppressed in various physical systems, aiding the understanding of physics beyond the standard model.

## Contribution

It provides an overview of the mechanisms leading to enhancement or suppression of CP violation in systems contributing to EDMs across different physical hierarchies.

## Key findings

- Identification of processes with enhanced CP violation effects
- Analysis of suppression mechanisms in composite systems
- Implications for probing new physics beyond the standard model

## Abstract

The electric dipole moment (EDM) is a very sensitive probe of CP violation beyond the standard model, and it as been measured in many systems such as atoms, neutrons, etc. The EDM of composite systems may be sensitive to several elementary level CP violating processes, but the theoretical evaluations of the CP violation at different physical (atomic, nuclear, hadronic, elementary) hierarchies are required to unveil them. In this context, we are particularly interested in which CP violating processes are enhanced in a given system, or vice versa. In this proceedings contribution, we will give an overview of the enhancement and suppression of CP violation in processes contributing to the EDMs of composite systems.