| Reduction of the incoherent $\gamma d \to \phi p n$ photoproduction near threshold (2009) | |||||||||
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Abstract | |||||||||
| We report measurements of differential cross sections and decay asymmetries of incoherent $\phi$-meson photoproduction from the deuteron at forward angles using linearly-polarized photons at \Eg=1.5$\sim$2.4 GeV. The nuclear transparency ratio for the deuteron shows a large suppression, and is consistent with the A-dependence of the ratio observed in a previous measurement with nuclear targets. The reduction for the deuteron cannot be adequately explained in term of the isospin asymmetry. The present results suggest that there might be some missing nuclear-structure effects that are yet to be understood.. Comment: 5 pages, 4 figures, submitted to Phys. Rev. Lett | |||||||||
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