Transverse Single Spin Asymmetry Measurement with J/Psi in Polarized p+p Collisions at RHIC

TL;DR

This paper reports on the measurement of transverse single spin asymmetry in J/ψ production in polarized proton-proton collisions at RHIC, providing insights into the gluon Sivers distribution function.

Contribution

It presents the first measurement of transverse single spin asymmetry of J/ψ at RHIC, offering a new probe of gluon spin-momentum correlations.

Findings

Measured asymmetry at forward rapidity in polarized p+p collisions.

Provides data relevant for understanding gluon Sivers function.

Uses 2006 RHIC data with 56% beam polarization.

Abstract

The PHENIX experiment has measured transverse single spin asymmetry of J/$\Psi$ in polarized p+p collisions at forward rapidity at $\sqrt{s}=200$ GeV. The data were collected from year 2006 run of RHIC with average beam polarization of 56%. At RHIC energy, heavy quark production is dominated by gluon gluon interaction. Therefore, the transverse single spin asymmetry in J/$\Psi$ production can provide a clean measurement of the gluon Sivers distribution function.