Journal Article

PreJuSER-55014

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Phi-Meson Photoproduction from Nuclei

Sibirtsev, A.FZJ* ; Hammer, H. W. ; Meissner, U. G.FZJ* ; Thomas, A. W.

2006
Springer Berlin

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Please use a persistent id in citations: http://hdl.handle.net/2128/10574  doi:10.1140/epja/i2006-10070-4

Abstract: We study coherent and incoherent phi-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 omega-phi mixing. These data indicate a normal distortion of the phi-meson in nuclei, which is compatible with the results obtained through the vector meson dominance model. The data on incoherent phi-meson photoproduction show an anomalous A-dependence resulting in a very strong phi-meson distortion. These data can be explained by a coupled-channel effect through the dominant contribution from the omega -> phi or the pi -> phi transition or, more speculative, through the excitation of a cryptoexotic B (phi)-baryon.

Keyword(s): photon nucleus: coherent interaction ; photon nucleus: incoherent interaction ; Phi(1020): photoproduction ; model: optical ; amplitude analysis: vector dominance ; coupled channel ; dependence: mass number ; slope ; differential cross section: energy dependence ; interference: (Phi(1020) omega(783)) ; baryon: exotic ; numerical calculations: interpretation of experiments

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut 3 (Theoretische Kernphysik) (IKP-TH)
2. Jülich-Aachen Research Alliance - Simulation Sciences (JARA-SIM)

Research Program(s):

1. Physik der Hadronen und Kerne (P53)

Appears in the scientific report 2006

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Database coverage:

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