$\varphi$ photoproduction on the proton at $E_{\gamma }$ = 1.5 - 2.9 GeV

Abstract

Differential cross sections at $t=t_{\text{min}}$ and decay asymmetries for the $\gamma p\to \varphi p$ reaction have been measured using linearly polarized photons in the range 1.5 to 2.9 GeV. These cross sections were used to determine the Pomeron strength factor. The cross sections and decay asymmetries are consistently described by the $t$-channel Pomeron and pseudoscalar exchange model in the $E_{\gamma }$ region above 2.37 GeV. In the lower energy region, an excess over the model prediction is observed in the energy dependence of the differential cross sections at $t=t_{\text{min}}$. This observation suggests that additional processes or interference effects between Pomeron exchange and other processes appear near the threshold region.

6 pages, 7 figures

References in corpus (5)

• Diffractive $\varphi$-meson photoproduction on proton near threshold
• Data analysis techniques, differential cross sections, and spin density matrix elements for the reaction $\gamma p\to \varphi p$
• Forward coherent $\varphi$-meson photoproduction from deuterons near threshold
• Measurement of Spin-Density Matrix Elements for $\varphi$-Meson Photoproduction from Protons and Deuterons Near Threshold
• Photoproduction of phi meson off deuteron near threshold

Cited by in corpus (4)

• Light Baryon Spectroscopy
• The $\varphi (2170)$ production in the process $\gamma p\to \eta \varphi p$
• Studies on the $K^{\ast }\Sigma$ bound-state via $K^{+}p\to K^{+}\varphi p$
• Measurement of Spin-Density Matrix Elements in $\varphi (1020)\to K_S^0{K}_L^0$ Photoproduction with a Linearly Polarized Photon Beam at $E_{\gamma }=8.2-8.8$ GeV