Polarization Measurements of $p^{\uparrow }$ and ${}^3$He${}^{\uparrow }$ Beams at RHIC and Future EIC Using the Polarized Atomic Hydrogen Gas Jet Target

Abstract

At the Relativistic Heavy-Ion Collider (RHIC), the Polarized Atomic Hydrogen Gas Jet Target polarimeter (HJET) is employed for the precise measurement of the absolute transverse (vertical) polarization of proton beams, achieving low systematic uncertainties of approximately ${\sigma }_P^{\text{syst}}/P\le 0.5\%$. The acquired experimental data not only facilitated the determination of single $A_{\text{N}}(t)$ and double $A_{\text{NN}}(t)$ spin analyzing powers for 100 and 255 GeV proton beams but also revealed a non-zero Pomeron spin-flip contribution through a Regge fit. Preliminary results obtained for forward inelastic $p^{\uparrow }p$ and elastic $p^{\uparrow }A$ analyzing powers will be discussed. The success of HJET at RHIC suggests its potential application for proton beam polarimetry at the upcoming Electron-Ion Collider (EIC), aiming for an accuracy of 1\%. Moreover, the provided analysis indicates that the RHIC HJET target can serve as a tool for the precision calibration, with the required accuracy, of the ${}^3$He beam polarization at the EIC.

22 pages, 11 figures. Submitted to the Proceedings of the 52nd International Symposium on Multiparticle Dynamics, August 21--26, 2023, GyonGyos, Hungary

References in corpus (14)

• Single Spin Asymmetry $A_N$ in Polarized Proton-Proton Elastic Scattering at $\sqrt{s}=200$ GeV
• Helicity in Proton-Proton Elastic Scattering and the Spin Structure of the Pomeron
• Spin-dependent Pomeron and Odderon in elastic proton-proton scattering
• Precision Small Scattering Angle Measurements of Elastic Proton-Proton Single and Double Spin Analyzing Powers at the RHIC Hydrogen Jet Polarimeter
• Systematic error analysis in the absolute hydrogen gas jet polarimeter at RHIC
• Corrections to the Elastic Proton-Proton Analyzing Power Parametrization at High Energies
• Probing the Pomeron spin structure with Coulomb-nuclear interference
• Coulomb phase corrections to the transverse analyzing power $A_N(t)$ in high energy forward proton-proton scattering
• Feasibility study for precisely measuring the EIC ${}^3$He beam polarization with the Polarized Atomic Hydrogen Gas Jet Target polarimeter at RHIC
• Breakup corrections to the ${}^3$He beam polarization measurements at the future BNL Electron Ion Collider
• Breakup corrections to spin asymmetries in the ${}^3$He beam polarization measurements with the Polarized Atomic Hydrogen Gas Jet Target
• Precision small scattering angle measurements of proton-proton and proton-nucleus analyzing powers at the RHIC hydrogen jet polarimeter
• Effects of odderon spin on helicity amplitudes in $pp$ elastic scattering
• Coulomb-Nuclear Interference in polarized pA scattering

Cited by in corpus (1)

• Absorptive corrections to the electromagnetic form factor in high-energy elastic proton-proton scattering