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Single Spin Asymmetry $A_N$ in Polarized Proton-Proton Elastic Scattering at $\sqrt{s}=200$ GeV
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arxiv 1206.1928 v3 pith:2DRAUSYU submitted 2012-06-09 nucl-ex hep-ex
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abstract
We report a high precision measurement of the transverse single spin asymmetry $A_N$ at the center of mass energy $\sqrt{s}=200$ GeV in elastic proton-proton scattering by the STAR experiment at RHIC. The $A_N$ was measured in the four-momentum transfer squared $t$ range $0.003 \leqslant |t| \leqslant 0.035$ $\GeVcSq$, the region of a significant interference between the electromagnetic and hadronic scattering amplitudes. The measured values of $A_N$ 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 $\sqrt{s}$, 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.
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Cited by 2 Pith papers
Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record
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Off forward non-SCHC contributions to exclusive vector quarkonium production from the "spin dependent BFKL Pomeron"
hep-ph 2025-06 conditional novelty 6.0 of 10
The spin-dependent BFKL Pomeron generates proton-helicity-flip amplitudes in exclusive quarkonium photoproduction at order momentum transfer squared, with explicit eikonal expressions and quark-model estimates.
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Central exclusive production of $\eta$ and $\eta'$ mesons in diffractive proton-proton collisions at the LHC within the tensor-pomeron approach
hep-ph 2025-06 conditional novelty 5.0 of 10
The tensor-pomeron model predicts 0.3 to 0.7 microbarn cross sections for central eta-prime production at the LHC, and shows that scalar-pomeron models forbid eta, eta-prime, and f1 production entirely.
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