Measurement of Spin-Density Matrix Elements for $\varphi$-Meson Photoproduction from Protons and Deuterons Near Threshold

W. C. Chang, D. S. Ahn, J. K. Ahn +53

The LEPS/SPring-8 experiment made a comprehensive measurement of the spin-density matrix elements for $\gamma p\to \varphi p$, $\gamma d\to \varphi pn$ and $\gamma d\to \varphi d$ at forward production angles. A lin…