SciPost Submission Page
Hadron Polarimetry for the Electron-Ion Collider
by A.S. Nunes, E.C. Aschenauer, O. Eyser, W. Schmidke
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Ana Sofia Nunes |
| Submission information | |
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| Preprint Link: | scipost_202108_00041v1 (pdf) |
| Date accepted: | 2022-03-04 |
| Date submitted: | 2021-08-16 02:36 |
| Submitted by: | Nunes, Ana Sofia |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 28th Annual Workshop on Deep-Inelastic Scattering (DIS) and Related Subjects (DIS2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approaches: | Experimental, Computational |
Abstract
The Electron-Ion Collider (EIC) will be the first collider to use both polarized electron beams and polarized proton and light ion beams. It will therefore offer unique opportunities to study the structure of nucleons and to answer fundamental questions in QCD. The uncertainties on the polarization measurement translate directly into the uncertainties of final physics observables. Hence, a precise measurement of the hadron beam polarization and a good control of systematic uncertainties are critical for the success of the spin program at the EIC. Contrary to the case of electron beam polarimetry, which uses physical processes derived from first principles that allow a high precision extraction of the electron beam polarization, for hadron beams no such process is available. The currently best used methods rely on the process of elastic scattering in the Coulomb-Nuclear Interference (CNI) region, for which there are only effective models available. The experience from RHIC, the only existing polarized proton collider, will be detailed and the challenges of the measurements at the EIC will be addressed. In particular, measurements of the present RHIC polarimeters and simulations of the future EIC polarimeters will be presented.
Published as SciPost Phys. Proc. 8, 163 (2022)
Reports on this Submission
Report 1 by Ciprian Gal on 2022-2-22 (Invited Report)
Report
The measurement of the hadron beam polarization at the EIC is crucially dependent on the current experience at RHIC. The author has shown the current status of the effort to understand measurement at RHIC and how these could be extended to the EIC. The criteria for publication have been met.