Phi-meson photoproduction from nuclei

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 pi -> phi transition or, more speculative, through the excitation of a cryptoexotic B_phi-baryon.

11 pages, 9 Figures

References in corpus (3)

• phi photo-production from Li, C, Al, and Cu nuclei at Egamma=1.5 - 2.4 GeV
• Diffractive $\varphi$-meson photoproduction on proton near threshold
• The Near-Threshold Production of Phi Mesons in pp Collisions

Cited by in corpus (9)

• Partonic flow and $\varphi$-meson production in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV
• Measurements of $\varphi$ meson production in relativistic heavy-ion collisions at RHIC
• Forward coherent $\varphi$-meson photoproduction from deuterons near threshold
• Near-threshold $\varphi$ meson production in proton-nucleus reactions and $\varphi$ width in finite nuclei
• Comments on differential cross section of phi-meson photoproduction at threshold
• Neutral pion photoproduction at high energies
• A-dependence of phi-meson production in p+A collisions
• Absorption of phi mesons in near-threshold proton-nucleus reactions
• ${\pi }^0\gamma$ invariant mass distribution in the low energy $\gamma p\to \omega p$ reaction