$\omega (\to {\pi }^{+}{\pi }^{-}{\pi }^0)$ meson photoproduction on proton

Abstract

The cross section is estimated for the ${\pi }^{+}{\pi }^{-}{\pi }^0$ invariant mass distribution in the $\gamma p$ reaction in the GeV region. This reaction is assumed to proceed through the formation of the $\omega$ meson in the intermediate state, since the production cross section for this meson in the $\gamma p$ reaction in GeV region is significant and it has large branching ratio (88.8%) in the ${\pi }^{+}{\pi }^{-}{\pi }^0$ channel. The cross sections for this reaction have been calculated using the energy dependent reaction amplitude, i.e., $f_{\gamma p\to \omega p}(0)$, extracted from the latest $\omega$ meson photoproduction data. We use established procedure to calculate other factors, like width and propagator of the $\omega$ meson, so that our calculation can provide reliable cross section. The calculated results reproduce the measured ${\pi }^{+}{\pi }^{-}{\pi }^0$ invariant mass distribution spectra in the $\gamma p$ reaction.

13 pages, 5 figures

References in corpus (2)

• Inclusive $\omega$ photoproduction from nuclei and $\omega$ in the nuclear medium
• Phi-meson photoproduction from nuclei

Cited by in corpus (1)

• Low energy ω(\to π^0 γ) meson photoproduction in the nucleus