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 · A dedicated fixed-target program pushed RHIC’s center-of-mass energies down to energies of only 3GeV. Our Cold QCD and spin research are integral to STAR’s physics program. A concerted effort by the collaboration resulted in forward detection capability through four new detectors first used in the 2022 proton-proton collisions.

2024年5月24日 · 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.

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 ...

10 小时之前 · RHIC’s STAR detector has been operational since RHIC’s beginning, with many upgrades culminating in 2022. Since then, its goals have been steady, including capturing as much data as possible from 200 GeV gold-gold collisions. “From Runs 23 and 24, we collected 8 billion high-quality gold-gold collision events, and we aim to collect an additional 10 billion events this year,” said ...

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.

19 小时之前 · STAR goals for Run 25. RHIC’s STAR detector has been operational since RHIC’s beginning, with many upgrades culminating in 2022. Since then, its goals have been steady, including capturing as ...

19 小时之前 · 2025年3月16日至3月21日，APS全球物理峰会（APS Global Physics Summit）在美国加利福尼亚州阿纳海姆举行。我院粒子科学技术研究中心易立教授和聂茂武副教授指导的研究生张思婕，代表STAR国际合作组做了“Semi-inclusive hadron+jet and inclusive jet yield measurements in O+O collisions at 200 GeV at RHIC-STAR”的口头报告，汇报 ...

The Relativistic Heavy Ion Collider (RHIC) is a highly versatile collider, able to collide var-ious heavy ions at center-of-mass energies from 7.7 GeV to 200 GeV in collider mode, from 3.0 to 7.7 GeV, and protons up to 510 GeV. It is also the only polarized hadron collider in the world.

2018年9月11日 · The Trigger has evolved over the years so that STAR can efficiently use RHIC’s increasing range of beam types, energies and luminosities. The STAR experiment consists of many different detectors that work together to survey the properties of particles produced in RHIC collisions over a large region of phase space.