2011/06/17 by A. Nehme, Nehme, A.
Physics and Astronomy · #Atomic and Subatomic Physics Research #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.1106.3491
openalex publication_date 2011/06/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In the framework of Chiral Perturbation Theory including photons, we found that the contribution of the photon exchange between two intermediate charged Kaons to the slope parameter of the decay (η→ 3π0) amounts to (-0.0221± 0.0034). When compared with the experimental value, (α=-0.0317± 0.0016), on the one hand, and with the contribution of the up and down quark mass difference, (+0.013± 0.032), on the other hand, our result leads to the direct conclusion: The (η→ 3π0) \textitdecay \ulinecannot be used to determine (md-mu).