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Pré-Publication, Document De Travail Année : 2005

RESULTS FROM PP2PP EXPERIMENT AT RHIC

Andrzej Sandacz
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Résumé

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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Dates et versions

hal-00011139 , version 1 (11-10-2005)
hal-00011139 , version 2 (17-11-2005)

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Andrzej Sandacz. RESULTS FROM PP2PP EXPERIMENT AT RHIC. 2005. ⟨hal-00011139v2⟩
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