High precision study of CP-violating charge asymmetry in K+- --> 3pi+- decays

2006/04/02 by E. Goudzovski, Goudzovski, E.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Neutrino Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0604002

A talk given at "Les Rencontres de Physique de la Vallee d'Aoste 2006", La Thuile, March 2006. 14 pages, 2 figures

arxiv created 2006/04/02 · openalex publication_date 2006/04/02 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28

Abstract

A precise measurement of the direct CP violating charge asymmetry parameter A_g in K^±→π^±π⁺π^- decays by the NA48/2 experiment at CERN SPS is presented. The experiment has been designed not to be limited by systematic uncertainties in the asymmetry measurement. A preliminary result for the charge asymmetry A_g=(-1.3±2.3)× 10^-4 has been obtained with a sample of 3.11× 10⁹ selected events corresponding to the full collected statistics. The precision of the result is limited by the statistics used.

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