Nonlocality and medium effects in the exclusive photoproduction of η mesons on nuclei

M. Hedayati-Poor, S. Bayegan, and H. S. Sherif
Phys. Rev. C 68, 045205 – Published 15 October 2003

Abstract

A relativistic model for the quasifree exclusive photoproduction of η mesons on nuclei is extended to include both nonlocal and medium effects. The reaction is assumed to proceed via the dominant contribution of the S11(1535) resonance. The complicated integrals resulting from the nonlocality are simplified using a modified version of a method given by Cooper and Maxwell. The nonlocality effects are found to affect the magnitude of the cross section. Some possible effects of the medium on the propagation and properties of the intermediate S11 resonance are studied. The effects of allowing S11 to interact with the medium via mean field scalar and vector potentials are considered. Both broadening of width and reduction in mass of the resonance lead to a suppression of the calculated cross sections.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 30 May 2003

DOI:https://doi.org/10.1103/PhysRevC.68.045205

©2003 American Physical Society

Authors & Affiliations

M. Hedayati-Poor1,3, S. Bayegan2, and H. S. Sherif1

  • 1Department of Physics, University of Alberta Edmonton, Alberta, Canada T6G 2J1
  • 2Department of Physics, University of Tehran, Tehran, Iran
  • 3Department of Physics, University of Arak, Arak, Iran

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 68, Iss. 4 — October 2003

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×