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arXiv · hep-ex/0510032

Results from PP2PP Experiment at RHIC

Andrzej Sandacz·the PP2PP Collaboration
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Abstract

We report on the first measurement of the single spin analyzing power ($A\_N$) at $\sqrt{s}=200$ GeV, obtained by the pp2pp experiment using polarized proton beams at the Relativistic Heavy Ion Collider (RHIC). Data points were measured in the four momentum transfer $t$ range $0.01 \leq |t| \leq 0.03$ $\GeVcSq$. Our result is about one standard deviation above the calculation, which uses interference between electromagnetic spin-flip amplitude and hadronic non-flip amplitude, the source of $A\_N$. The difference could be explained by an additional contribution of a hadronic spin-flip amplitude to $A\_N$.

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Andrzej Sandacz, the PP2PP Collaboration. 2005-11-17. Results from PP2PP Experiment at RHIC. https://arxiv.org/abs/hep-ex/0510032

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