First measurement of coherent $φ$-meson photoproduction on deuteron at low energies

Details First measurement of coherent $φ$-meson photoproduction on deuteron at low energies First measurement of coherent $φ$-meson photoproduction on deuteron at low energies

2007-03-07

arxiv.org/abs/nucl-ex/0703013v1

Phys.Rev.C76:052202,2007

Physics

Nuclear Physics

Nuclear Experiment

6 pages

Scientific paper

10.1103/PhysRevC.76.052202

The cross section and decay angular distributions for the coherent \phi meson photoproduction on the deuteron have been measured for the first time up to a squared four-momentum transfer t =(p_{\gamma}-p_{\phi})^2 =-2 GeV^2/c^2, using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The cross sections are compared with predictions from a re-scattering model. In a framework of vector meson dominance, the data are consistent with the total \phi-N cross section \sigma_{\phi N} at about 10 mb. If vector meson dominance is violated, a larger \sigma_{\phi N} is possible by introducing larger t-slope for the \phi N \to \phi N process than that for the \gamma N \to \phi N process. The decay angular distributions of the \phi are consistent with helicity conservation.

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