Monte Carlo simulation of the Sivers effect in high-energy proton-proton collisions

Abstract

We present Monte Carlo simulations of the Sivers effect in the polarized Drell-Yan $p{p}^{\uparrow }\to {\mu }^{+}{\mu }^{-}X$ process at the center-of-mass energy $\sqrt{s}=200$ GeV reachable at the Relativistic Heavy-Ion Collider (RHIC) of BNL. We use two different parametrizations for the Sivers function, one deduced from the analysis of Semi-Inclusive Deep-Inelastic Scattering (SIDIS) data at much lower energies, and another one constrained by the RHIC data for the $p{p}^{\uparrow }\to \pi X$ process at the same energy. For a given luminosity of $10^{32}$ cm${}^{-2}$ sec${}^{-1}$, we explore the necessary conditions to reach a statistical accuracy that allows to extract unambiguous information on the structure of the Sivers function. In particular, we consider the feasibility of the test on its predicted universality property of changing sign when switching from SIDIS to Drell-Yan processes.

arXiv comment17 pages in RevTeX; 7 figures in eps format; improved text, added reference

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