NSTAR 2007 pp 162-165 | Cite as

Chiral constituent quark model study of the process γp → ηp

  • J. He
  • B. Saghai
  • Z. Li
  • Q. Zhao
  • J. Durand
Conference paper

Abstract

A constituent quark model is developed for the reaction γp → ηp, allowing us to investigate all available data for differential cross-sections as well as single polarization asymmetries (beam and target) by including all of the PDG, one to four star, nucleon resonances (S 11, P 11, P 13, D 13, D 15, F 15, F 17, G 17, G 19, H 19, I 1,11, and K 1,13). Issues related to the missing resonances are also briefly discussed by examining possible contributions from several new resonances (S 11, P 11, P 13, D 13, D 15, and H 1,11).

PACS

13.60.Le Meson production 14.20.Gk Baryon resonances with S = 0 
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Copyright information

© Società Italiana di Fisica / Springer-Verlag 2008

Authors and Affiliations

  • J. He
    • 1
  • B. Saghai
    • 1
  • Z. Li
    • 2
  • Q. Zhao
    • 3
  • J. Durand
    • 1
  1. 1.DAPNIA/SPhN, DSM, CEA/SaclayGif-sur-YvetteFrance
  2. 2.Department of Computer and Information ScienceUniversity of MarylandUSA
  3. 3.Institute of High Energy PhysicsChinese Academy of SciencesBeijingPRC

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