Neutral pion photoproduction at high energies

Abstract

A Regge model with absorptive corrections is employed in a global analysis of the world data on the reactions gamma p -> pi0 p and gamma n -> pi0 n for photon energies from 3 to 18 GeV. In this region resonance contributions are expected to be negligible so that the available experimental information on differential cross sections and single- and double polarization observables at -t < 2 GeV^2 allows us to determine the non-resonant part of the reaction amplitude reliably. The model amplitude is then used to predict observables for photon energies below 3 GeV. A detailed comparison with recent data from the CLAS and CB-ELSA Collaborations in that energy region is presented. Furthermore, the prospects for determining the pi0 radiative decay width via the Primakoff effect from the reaction gamma p -> pi0 p are explored.

14 pages, 17 figures, typos in table 3 corrected; accepted for publication in Eur. Phys. J. A

References in corpus (14)

• Dispersion analysis of the nucleon form factors including meson continua
• Analysis of Pion Photoproduction Data
• Effective Lagrangian Approach to the Theory of Eta Photoproduction in the $N^{\ast }(1535)$ Region
• Partial wave decomposition of pion and photoproduction amplitudes
• The decay pi0 to gamma gamma to next to leading order in Chiral Perturbation Theory
• ${\pi }^0$ photoproduction on the proton for photon energies from 0.675 to 2.875 GeV
• Neutral pion photoproduction off protons in the energy range 0.3 GeV < E(gamma) < 3 GeV
• Phi-meson photoproduction from nuclei
• Photoproduction of pi0-mesons off protons from the Delta(1232) region to E(gamma) = 3 GeV
• Systematic Regge theory analysis of omega photoproduction
• The Primakoff effect on a proton target
• Regge approach to charged-pion photoproduction at invariant energies above 2 GeV
• Pion-nucleon charge-exchange amplitudes above 2 GeV
• Spin observables and the determination of the parity of ${\Theta }^{+}$ in photoproduction reactions

Cited by in corpus (15)

• Baryon spectroscopy
• Photocouplings at the Pole from Pion Photoproduction
• Neutral Pion Lifetime Measurements and the QCD Chiral Anomaly
• Regge phenomenology of pion photoproduction off the nucleon at forward angles
• Neutral Pion Photoproduction in a Regge Model
• Regge phenomenology in ${\pi }^0$ and $\eta$ photoproduction
• Primakoff production of ${\pi }^0$, $\eta$ and ${\eta }^{\prime }$ in the Coulomb field of a nucleus
• $\eta$ production off the proton in a Regge-plus-chiral quark approach
• Photoproduction of Pseudoscalar Mesons off Nuclei at Forward Angles
• Proton-proton scattering above 3 GeV/c
• Backward pion-nucleon scattering
• Analysis of recent eta photoproduction data
• Structure of Pion Photoproduction Amplitudes
• Primakoff effect in eta-photoproduction off protons
• Incoherent photoproduction of pseudoscalar mesons off nuclei at forward angles