2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/211983We report on the first measurement of the single spin analyzing power (A_N) at sqrt(s)=200GeV, 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 < |t| < 0.03 (GeV/c)^2. Our result, averaged over the whole t-interval 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.13 pages, 5 figures. New values of polarization errors. Final version submitted to Phys. Lett. BNuclear ExperimentHigh Energy Physics - Experimenttext