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Coherent nuclear photoproduction of the eta-meson

Authors
  • Benafatto, G.
Publication Date
Jan 01, 1970
Identifiers
DOI: 10.1007/BF02728773
OAI: oai:inspirehep.net:64506
Source
INSPIRE-HEP
License
Unknown
External links

Abstract

This work is essentially devoted to a critical review of some of the thoretical assumptions, which have recently allowed a Bonn-Pisa collaboration to extract the rate Г(η→2γ) from the analysis of the experimental data on η photoproduction on complex nuclei. In particular we study the two following subjects:a) the effect of γ absorption in the nucleus on the coherent nuclear cross-section angular dependence, in agreement with some recent results, both theoretical and experimental;b) the estimate of the overall magnitude of the coherent nuclear contribution. We conclude that it would be useful to re-analyse the experimental data, following the suggestions of this work. We hope that it is possible, in that manner, to explain the very bad disagreement between the measured value of Г(η→2γ) and the predictions of most theoretical models.

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