Measurement of Elastic $\varphi$ Photoproduction at HERA

ZEUS Collaboration

The production of $\varphi$ mesons in the reaction $e^{+}p\to e^{+}\varphi p$ ($\varphi \to K^{+}{K}^{-}$) at a median $Q^2$ of $10^{-4}\mathrm{Ge}{\mathrm{V}}^2$ has been studied with the ZEUS…