Coulomb-Nuclear Interference in polarized pA scattering
Abstract
We made the first attempt to understand the observed unusual t dependence of single-spin asymmetry observed in the HJET experiment at RHIC. Usually, the interaction of hadrons is presented as a long-range Coulomb interaction and a short-range strong interaction with Coulomb corrections. Such a division gives rise to a Coulomb phase of the hadronic term. Conversely, here we consider short-range hadronic interaction as a correction to the long-range electromagnetic term, i.e., we treat it as an absorptive correction. This significantly affects the Coulomb-nuclear interference, which is a source of single-spin azimuthal asymmetry at small angles.
Cite
@article{arxiv.2312.03702,
title = {Coulomb-Nuclear Interference in polarized pA scattering},
author = {B. Z. Kopeliovich and M. Krelina and I. K. Potashnikova},
journal= {arXiv preprint arXiv:2312.03702},
year = {2024}
}
Comments
9 pages, 5 figures, A talk given by B.Z.K. at The 52nd International Symposium on Multiparticle Dynamics (ISMD 2023) Aug. 21-26 Gy\"ongy\"os, Hungary