Spin alignment and violation of the OZI rule in exclusive $\omega$ and $\varphi$ production in pp collisions

C. Adolph, R. Akhunzyanov, M. G. Alexeev +206

Exclusive production of the isoscalar vector mesons $\omega$ and $\varphi$ is measured with a 190 GeV$/c$ proton beam impinging on a liquid hydrogen target. Cross section ratios are determine…