Measurement of direct CP violation by the NA48 experiment at CERN

TL;DR

The NA48 experiment at CERN measured direct CP violation in neutral kaons, finding a value for the parameter (/) that suggests observable CP violation effects in the system.

Contribution

This work provides a new measurement of (/) using data from 1997-1998, contributing to the understanding of CP violation in kaons.

Findings

(/) = (14.0 1 4.3) imes 10^{-4}

Evidence of direct CP violation in the neutral kaon system

Supports the presence of CP violation beyond the Standard Model expectations.

Abstract

The NA48 experiment at CERN has performed a measurement of direct CP violation in the neutral kaon system, based on data collected in 1997 and 1998. The preliminary result for the parameter $\Re(\epsilon^{\prime}/\epsilon)$ is $(14.0 \pm 4.3) \times 10^{-4}$.