TL;DR
This paper reviews recent results from RHIC's polarized proton collisions, highlighting advances in understanding proton spin structure, gluon contributions, and parity violation, with future prospects in transverse physics and Drell-Yan asymmetry measurements.
Contribution
It summarizes the latest experimental findings from RHIC, including constraints on gluon spin contribution and first observations of parity violation in W production.
Findings
Gluon spin contribution to proton spin is significantly constrained.
First observation of parity violating single spin asymmetry in W production.
Future measurements of Drell-Yan single spin asymmetry are emphasized.
Abstract
The Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory delivers the world's highest energy polarized proton-proton collisions at a center of mass energy up to 500 GeV and provides a unique opportunity to study the quark and gluon spin structure of the proton and QCD dynamics at high energy scale. RHIC has produced many exiting physics results in recent years. The latest data from RHIC significantly constrain the gluon spin contribution to the proton spin, and the parity violating single spin asymmetry are observed for the first time in W production by both the PHENIX and STAR collaborations. In this report, I present the latest results from the PHENIX and STAR experiments, followed by a brief discussion of the future prospects of transverse physics, particularly on the importance of the unique measurements of Drell-Yan single spin asymmetry.
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