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

Alexander Botov

doi:10.1051/epjconf/201921203009

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 212, 03009 (2019)
https://doi.org/10.1051/epjconf/201921203009

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

Alexander Botov^*

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, $ϕ η$ $\phi \eta$ , 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, $ϕ η$ $\phi \eta$ , 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.

© The Authors, published by EDP Sciences, 2019

This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.