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Single spin asymmetry A N in polarized proton–proton elastic scattering at √ s = 200 GeV
Name
1-s2.0-S0370269313000373-main.pdf
Description
Published version
Size
657.9 KB
Format
Adobe PDF
Checksum (MD5)
226e53d71d888c5abb21eaf3aa4efd42
Date Issued
2013
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publisher
Elsevier BV
Citation
Adamczyk, L., et al. "Single Spin Asymmetry an in Polarized Proton-Proton Elastic Scattering at Root S=200 Gev." Physics Letters B 719 1-3 (2013): 62-69.
Version
Final published version
Abstract
We report a high precision measurement of the transverse single spin asymmetry AN at the center of mass energy s=200GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The AN was measured in the four-momentum transfer squared t range 0.003≤|t|≤0.035(GeV/c)2, the region of a significant interference between the electromagnetic and hadronic scattering amplitudes. The measured values of AN and its t-dependence are consistent with a vanishing hadronic spin-flip amplitude, thus providing strong constraints on the ratio of the single spin-flip to the non-flip amplitudes. Since the hadronic amplitude is dominated by the Pomeron amplitude at this s, we conclude that this measurement addresses the question about the presence of a hadronic spin flip due to the Pomeron exchange in polarized proton-proton elastic scattering. © 2013 Elsevier B.V.
Terms of Use
Creative Commons Attribution 3.0 unported license
Persistent DSpace Link
DOI of Published Version
10.1016/j.physletb.2013.01.014
