Recently, we measured exclusive J/ψ, ψ(2s), and di-electron pair photoproduction in Au+Au ultra-peripheral collisions at RHIC using the STAR detector. For J/ψ production, both coherent (nucleus remains intact) and incoherent (nucleus breaks up) processes were observed.

2025年1月30日 · RHIC is a discovery machine in which STAR continues to play a central role with more than twenty-two RHIC runs of data collected and still more to come. The scientists in our collaboration come from 74 institutions across 14 countries, with more institutes joining us …

The Solenoidal Tracker at RHIC, known as STAR, tracks the thousands of particles produced by ion collisions at RHIC. STAR is used to search for signatures of the form of matter that RHIC was designed to create: the quark-gluon plasma.

RHIC is the world's only machine capable of colliding beams of polarized protons to investigate the 'missing' spin of the proton. Before high-speed packets of heavy ions can be brought into collisions with one another, they first travel through a chain of smaller particle accelerators.

The STAR detector (for Solenoidal Tracker at RHIC) is one of the four experiments at the Relativistic Heavy Ion Collider (RHIC) in Brookhaven National Laboratory, United States. [ 1 ] [ 2 ] [ 3 ] The primary scientific objective of STAR is to study the formation and characteristics of the quark–gluon plasma (QGP), a state of matter believed ...

工程物理系是RHIC 上的螺旋形径迹探测器（STAR）国际合作组成员，自2001 年始，我们采用多气隙阻性板室（MRPC）技术为STAR 先后建造了大型飞行时间探测器（TOF）和新型缪子探测器（MTD）。 整个TOF 的时间分辨达到80ps，性能优良，运行稳定，大大提高了高动量区的粒子鉴别能力。 MTD 将是STAR 未来几年物理运行的主要探测器，预期将在夸克胶子等离子态物 …

相对论性重离子对撞机（relativistic heavy ion collider，RHIC）是全球第一座重离子对撞机，也是唯一的一座自旋-极化质子对撞机。RHIC由美国 布鲁克黑文国家实验室负责管理和运营，位于纽约州 阿普顿市 （ 英语 ： Upton ） 。

2021年8月1日 · 近期， rhic-star 国际合作实验在世界上首次证实了从光产生物质的基本物理过程，并提供了真空中的偏振光在磁场作用下折射的实验证据。 这两个过程分别于 1934 年和 1936 年 被 提出，距今已有 80 多年。

The Solenoidal Tracker at RHIC (STAR) is designed to detect charged and neutral particles produced in relativistic heavy ion collisions. The majority of the STAR data is provided by relatively slow detectors: TPC, SVT, FTPC, EMC.

2024年8月22日 · rhic-star是基于美国布鲁克海文国家实验室相对论重离子对撞机（rhic）上star实验的大型国际合作组，由来自14个国家74个单位的700多位科研人员组成。 该项研究受到了国家自然科学基金委、科技部等单位的经费资助。