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.
Keywords
Cite
@article{arxiv.0902.1819,
title = {Neutral pion photoproduction at high energies},
author = {A. Sibirtsev and J. Haidenbauer and S. Krewald and U. -G. Meißner and A. W. Thomas},
journal= {arXiv preprint arXiv:0902.1819},
year = {2009}
}
Comments
14 pages, 17 figures, typos in table 3 corrected; accepted for publication in Eur. Phys. J. A