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Type: Journal article
Title: phi-meson photoproduction from nuclei
Author: Sibirtsev, A.
Hammer, H.
Meissner, U.
Thomas, A.
Citation: European Physical Journal A, 2006; 29(2):209-220
Publisher: Springer
Issue Date: 2006
ISSN: 1434-6001
Statement of
A. Sibirtsev, H.-W. Hammer, U.-G. Meißner and A.W. Thomas
Abstract: We study coherent and incoherent φ-meson photoproduction from nuclei. The available data are analyzed in terms of single- and coupled-channel photoproduction. It is found that the data on coherent photoproduction can be well reproduced within a single-channel optical model and show only little room for ω-φ mixing. These data indicate a normal distortion of the φ-meson in nuclei, which is compatible with the results obtained through the vector meson dominance model. The data on incoherent φ-meson photoproduction show an anomalous A-dependence resulting in a very strong φ-meson distortion. These data can be explained by a coupled-channel effect through the dominant contribution from the ω↦φ or the π↦φ transition or, more speculative, through the excitation of a cryptoexotic B φ-baryon.
Rights: © 2006 Springer, Part of Springer Science+Business Media
RMID: 0020096172
DOI: 10.1140/epja/i2006-10070-4
Appears in Collections:Physics publications

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