Study of the process e⁺e^-→ π⁺π^-π⁰η at the SND detector

Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia

^* e-mail: A.A.Botov@inp.nsk.su

Published online: 17 June 2019

Abstract

The reaction e⁺e^-→ π⁺π^-π⁰η has been studied in the center-of-mass energy region below 2 GeV in the experiment with the SND detector at the VEPP-2000 e⁺e^- collider. The reaction proceeds via the four intermediate states: ωη, $\varphi \eta$, a₀(980)ρ, and a structureless π⁺π^-π⁰η state, which may be, for example, ρ(1450)π state with ρ(1450) → ρ(770)η. The total e⁺e^-→ π⁺π^-π⁰η cross section and the cross section for its components, ωη, $\varphi \eta$, and a sum of a₀(980)ρ and the structureless state, have been measured separately. Our results are in agreement with previous measurements and have comparable or better accuracies.