标题： STAR实验在RHIC处极化质子对撞中的结果 显示英文标题

标题： STAR Results from Polarized Proton Collisions at RHIC

摘要： 这次报告介绍了在布鲁克海文国家实验室（BNL）的相对论重离子对撞机（RHIC）上，极化质子碰撞前两年取得的进展。 STAR是RHIC上的两个大型实验之一。 它具有覆盖广泛快速度范围的大接受度。 STAR自旋计划的长期目标是测量胶子对质子自旋的贡献；通过研究矢量玻色子产生中的自旋可观测量，确定特定夸克味对质子自旋的贡献，并确定横向结构函数。 对 $\sqrt{s}$=200 和 500 GeV 的极化质子碰撞的研究，预计将为质子的自旋结构提供重要见解，揭示自旋求和规则中来自胶子或部分子轨道运动的贡献。 展示了在前两次运行期间对极化质子碰撞研究的选定STAR结果。 显示英文摘要

摘要： This talk reports on progress from the first two years of polarized proton collisions at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL). STAR is one of the two large experiments at RHIC. It features large acceptance spanning a broad range of rapidity. The long-term goals of the STAR spin program are to measure the gluon contribution to the proton's spin; determine the contribution of specific quark flavors to the spin of the proton through the study of spin observables for vector boson production, and to determine the transversity structure function. The study of polarized proton collisions at $\sqrt{s}$=200 and 500 GeV is expected to provide important insight into the spin structure of the proton, revealing the contributions to the spin sum rule either from gluons or from the orbital motion of the partons. Selected STAR results from the study of polarized proton collisions during the first two runs are presented.