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The European Physical Journal A

, Volume 41, Issue 1, pp 71–84 | Cite as

Neutral pion photoproduction at high energies

  • A. Sibirtsev
  • J. HaidenbauerEmail author
  • S. Krewald
  • U. -G. Meißner
  • A. W. Thomas
Regular Article - Theoretical Physics

Abstract

A Regge model with absorptive corrections is employed in a global analysis of the world data on the reactions \( \gamma\) p \( \rightarrow\) \( \pi^{0}_{}\) p and \( \gamma\) n \( \rightarrow\) \( \pi^{0}_{}\) n for photon energies from 3 to 18GeV. 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 \( \leq\) 2 GeV2allows us to determine the reaction amplitude reliably. The model amplitude is then used to predict observables for photon energies below 3GeV. 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 \( \pi^{0}_{}\) radiative decay width via the Primakoff effect from the reaction \( \gamma\) p \( \rightarrow\) \( \pi^{0}_{}\) p are explored.

PACS

11.55.Jy Regge formalism 13.60.Le Meson production 13.60.-r Photon and charged-lepton interactions with hadrons 25.20.Lj Photoproduction reactions 

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • A. Sibirtsev
    • 1
    • 2
  • J. Haidenbauer
    • 3
    • 4
    Email author
  • S. Krewald
    • 3
    • 4
  • U. -G. Meißner
    • 1
    • 3
    • 4
  • A. W. Thomas
    • 5
    • 6
  1. 1.Helmholtz-Institut für Strahlen- und Kernphysik (Theorie) und Bethe Center for Theoretical PhysicsUniversität BonnBonnGermany
  2. 2.Excited Baryon Analysis Center (EBAC)Thomas Jefferson National Accelerator FacilityNewport NewsUSA
  3. 3.Institut für Kernphysik and Jülich Center for Hadron PhysicsForschungszentrum JülichJülichGermany
  4. 4.Institute of Advanced SimulationsForschungszentrum JülichJülichGermany
  5. 5.Theory CenterThomas Jefferson National Accelerator FacilityNewport NewsUSA
  6. 6.College of William and MaryWilliamsburgWilliamsburgUSA

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