Coherent η photoproduction on 4he and 12c in the near-threshold region

A. Fix, H. Arenhövel

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Coherent η meson photoproduction on 4He and 12C is considered in the near-threshold region. The elementary η photoproduction operator includes contributions from the S11 (1535) and D13(1520) resonances as well as t-channel vector meson exchange and the nucleon pole terms. Due to the suppression of the dominant S11(1535) resonance for spin and isospin saturated nuclei, the reaction is mainly governed by ω exchange. Furthermore, the influence of Fermi motion and of different prescriptions for the choice of the invariant reaction energy WγN in the elementary amplitude is studied.

Original languageEnglish
Pages (from-to)457-474
Number of pages18
JournalNuclear Physics A
Volume620
Issue number4
Publication statusPublished - 21 Jul 1997

Keywords

  • Coherent η
  • Effective lagrangian approach
  • Fermi motion
  • Photoproduction

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Coherent η photoproduction on <sup>4</sup>he and <sup>12</sup>c in the near-threshold region'. Together they form a unique fingerprint.

Cite this