${\pi }^0\gamma$ invariant mass distribution in the low energy $\gamma p\to \omega p$ reaction

Abstract

We study the reaction mechanism for the correlated ${\pi }^0\gamma$ emission in the photon induced reaction on the proton target. Since this reaction is studied in the GeV region, we assume that it proceeds through the formation of the vector meson in the intermediate state. The vector meson, being an unstable particle, decays into ${\pi }^0\gamma$ bosons after propagating certain distance. Our analysis shows that the ${\pi }^0\gamma$ event seen in coincidence in the final state dominantly arises due to the decay of $\omega$ meson. The calculated results reproduce the measured ${\pi }^0\gamma$ invariant mass distribution spectra very well.

arXiv comment6 pages in Journal, 2 figures

References in corpus (23)

• Rho-omega mixing, vector meson dominance and the pion form-factor
• First observation of in-medium modifications of the omega meson
• The Spectral Function of the Rho Meson in Nuclear Matter
• Double Pion Photoproduction on the Nucleon: Study of the Isospin Channels
• Phi meson mass and decay width in nuclear matter
• e^+e^- Pair Production from $\gamma$ A Reactions
• Mass dependence of inclusive nuclear $\varphi$ photoproduction
• Meson Masses in Nuclear Matter
• The $\rho$ Spectral Function in a Relativistic Resonance Model
• Inclusive $\omega$ photoproduction from nuclei and $\omega$ in the nuclear medium
• Phi-meson photoproduction from nuclei
• Acceptance and resolution simulation studies for the dielectron spectrometer HADES at GSI
• The $\varphi$ meson width in the medium from proton induced $\varphi$ production in nuclei
• Medium effects in the production and decay of vector mesons in pion-nucleus reactions
• e+ e- pairs from pi- A reactions
• $\rho$-meson properties at finite nuclear density
• Mass Shift and Width Broadening of Rho-Mesons Produced in Heavy Ion Collisions
• $\omega N$ final state interactions and $\omega$-meson production from heavy-ion collisions
• Systematic Regge theory analysis of omega photoproduction
• In-Medium rho^0 Spectral Function Study via the 2H, 3He, 12C(gamma,pi+pi-) Reaction
• $e^{+}{e}^{-}$ pairs from ${\pi }^{-}$A reactions
• Chiral dynamics of baryon resonances and hadrons in a nuclear medium
• ${\pi }^{+}{\pi }^{-}$ Emission from Coherent ${\rho }^0$ Propagation in Nuclei

Cited by in corpus (2)

• Low energy ω(\to π^0 γ) meson photoproduction in the nucleus
• Semihadronic and hadronic decays of ${\rho }^0$ and $\omega$ mesons coherently photoproduced in the isoscalar nuclei