Determination of the polarization in the $\vec{p}p\to pp$ reaction with WASA-at-COSY detector

Abstract

The dynamics of $\hat{I}\cdot$-meson production and the interaction of $\hat{I}\cdot$-mesons with nucleons can be studied using the $\vec{p}p\to pp\hat{I}\cdot$ reaction via measurements of the analyzing power $A_y$. To this end, we have performed a measurement of the $\vec{p}p\to pp\hat{I}\cdot$ reaction using the WASA-at-COSY detector, which provides large acceptance and is $\ddot{I}†$-symmetric. The experiment was carried out for beam momenta of $2026$ MeV/c and $2188$ MeV/c. In this article we present a method and results for the determination of the degree of the beam polarization.