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arXiv · 2211.17146

Precision small scattering angle measurements of proton-proton and proton-nucleus analyzing powers at the RHIC hydrogen jet polarimeter

A. A. Poblaguev·A. Zelenski·E. Aschenauer·G. Atoian·K. O. Eyser·H. Huang·W. B. Schmidke·I. Alekseev·D. Svirida·N. H. Buttimore
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Abstract

At RHIC, the hydrogen jet target polarimeter (HJET) is used to measure proton beam polarization with accuracy $\sigma_P^\text{syst}/P\lesssim0.5\%$ by counting low energy (1--10 MeV) recoil protons in left-right symmetric detectors. The HJET performance also allowed us to precisely measure $pp$ and $p$A (where A is any ion stored at RHIC) analyzing powers in the CNI region. The results of the measurements are discussed.

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A. A. Poblaguev, A. Zelenski, E. Aschenauer, G. Atoian, K. O. Eyser, H. Huang, W. B. Schmidke, I. Alekseev, D. Svirida, N. H. Buttimore. 2022-11-30. Precision small scattering angle measurements of proton-proton and proton-nucleus analyzing powers at the RHIC hydrogen jet polarimeter. https://arxiv.org/abs/2211.17146

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