Determination of the η→π⁺π^-π⁰ Dalitz Plot slopes and asymmetries with the KLOE detector

2007/07/16 by KLOE Collaboration, F. Ambrosino, Ambrosino, F. +162
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.0707.2355

openalex publication_date 2007/07/16 · openalex created_date 2024/04/10 · openalex updated_date 2026/07/28

Abstract

We have studied, with the KLOE detector at the DAΦNE Φ-Factory, the dynamics of the decay η→π⁺π^-π⁰ using data from the radiative ϕ→ηγ decay for an integrated luminosity L = 450 \textrmpb^-1. From a fit to the Dalitz plot density distribution we obtain a precise measurement of the slope parameters. This should allow to improve the knowledge of the decay amplitude which is sensitive to the u-d quark mass difference. We also present new best results on the C-violating asymmetries in the η→π⁺π^-π⁰ decay.

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