Study of ŋ-meson Decays at KLOE/KLOE-2

Abstract

Abstract As a φ-factory, KLOE/KLOE-2 has a very large and clean ŋ sample, which supports plenty of related precision measurements. This report presents the recent results and status on the ŋ-meson decays from KLOE/KLOE-2 experiments, including the search of the C-violating decay η → γ γ γ , the determination of the CP asymmetry in η → π + π − e + e − , the precision measurement of the η → π + π − π 0 Dalitz plot distribution, the search of the CP-violating decay η → π + π − and the precision measurement of O (p 6) dominated decay η → γ γ π 0 .