The process $e^+e^-\to\pi^+\pi^-\pi^0$ in the energy range 2E_0=1.04 - 1.38 GeV

TL;DR

This study investigates the process e^+e^- to pi^+pi^-pi^0 in the 1.04 to 1.38 GeV energy range, revealing a broad resonance peak around 1220 MeV, suggesting an omega-like resonance.

Contribution

First measurement of the e^+e^- to pi^+pi^-pi^0 process in this energy range, identifying a new omega-like resonance around 1200 MeV.

Findings

Observed a broad peak at 1220 MeV

Measured maximum cross section of about 4 nb

Identified a possible omega-like resonance

Abstract

In the experiment with the SND detector at VEPP-2M e^+e^- collider the process $e^+e^-\to\pi^+\pi^-\pi^0$ was studied in the energy range 2E_0 from 1.04 to 1.38 GeV. A broad peak was observed with the visible mass $M_{vis}=1220\pm 20$ MeV and cross section in the maximum $\sigma_0\simeq 4$ nb. The peak can be interpreted as a $\omega$-like resonance $\omega (1200)$.