The Completion of Single-Spin Asymmetry Measurements at the Proza Setup

TL;DR

This paper reports the completion of a 30-year series of measurements of single-spin asymmetries in inclusive π^0 production at the PROZA setup, showing consistency across different energy regions.

Contribution

It provides the first comprehensive dataset covering both target and beam fragmentation regions at 50 GeV, completing decades of polarized measurement data.

Findings

Asymmetry measurements agree across different energy regions.

The data supports the universality of single-spin asymmetries.

The study extends the understanding of spin effects in proton-proton interactions.

Abstract

Single spin asymmetry in inclusive $\pi^0$-production was measured in the polarized target fragmentation region using 50 GeV proton beam. The asymmetry is in agreement with asymmetry measurements in the polarized beam fragmentation region carried out at higher energies. The measurement completed 30-years history of polarized measurements at the PROZA setup.