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

A. Fix, H. Arenhövel

Research output: Contribution to journalArticle

21 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

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photoproduction
thresholds
vector mesons
poles
mesons
retarding
operators
nuclei
energy

Keywords

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

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Coherent η photoproduction on 4he and 12c in the near-threshold region. / Fix, A.; Arenhövel, H.

In: Nuclear Physics A, Vol. 620, No. 4, 21.07.1997, p. 457-474.

Research output: Contribution to journalArticle

Fix, A. ; Arenhövel, H. / Coherent η photoproduction on 4he and 12c in the near-threshold region. In: Nuclear Physics A. 1997 ; Vol. 620, No. 4. pp. 457-474.
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