Effects of Absorption in Small-angle Scattering of Polarized Protons
2019
6 pages
Part of Proceedings, Diffraction and Low-x 2018 (Difflowx2018) : Reggio Calabria, Italy, August 26 - September 1, 2018, 747-752
Published in:
- Acta Phys.Polon.Supp. 12 (2019) 4, 747-752
Contribution to:
- , 747-752
- Difflowx2018
- Published: 2019
Citations per year
Abstract:
We investigate the single-spin asymmetry, AN(t), arising from Coulombnuclear interference (CNI) in the small-angle elastic scattering of polarized protons. Previous theoretical predictions failed to explain the non-trivial t dependence of AN in elastic proton–gold scattering, measured recently at RHIC. We found that the absorptive corrections make the Coulomb amplitude of pA elastic scattering significantly different from eA scattering, leading to dramatic changes in the t dependence. Moreover, we also found the absorptive corrections being significant for the analysis of data for polarized pp elastic scattering, which previously revealed a zero spin-flip part of the Pomeron. We concluded with an essentially non-zero hadronic spin-flip.- scattering: small-angle
- absorption: effect
- spin: asymmetry
- p: beam
- polarized beam
- p nucleus: scattering
- Coulomb
- p p: scattering
- elastic scattering
- pomeron: exchange
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