Determination of the g(V sigma gamma) coupling constant through theprocess gamma plus N -> N plus V with circularly polarized photons

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Rekalo M., Tomasi-Gustafsson E.

NUCLEAR PHYSICS A, vol.714, pp.632-640, 2003 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 714
  • Publication Date: 2003
  • Doi Number: 10.1016/s0375-9474(02)01403-3
  • Journal Name: NUCLEAR PHYSICS A
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.632-640
  • Middle East Technical University Affiliated: No


We suggest to measure the t-dependence of the two possible T-even asymmetries for the photoproduction of vector mesons, gamma + rho --> rho + V-0, V-0 = rho or omega, in the collision of circularly polarized photons with a polarized proton target. In the framework of a (pi + sigma)-model, these asymmetries are very sensitive to the relative role of pi- and sigma-exchanges, in the near threshold region. (C) 2002 Elsevier Science B.V. All rights reserved.