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 ...

The Solenoidal Tracker at RHIC (STAR) is one of two large detector systems con-structed at the RelativisticHeavy Ion Collider (RHIC) at Brookhaven National Lab-oratory. There are eighteen articles in this volume that describe the STAR detector. They are: • STAR Detector Overview (This article) • The STAR Detector Magnet System

STAR is designed to search for signatures of quark-gluon plasma formation and to investigate the behavior of strongly interacting matter at high energy density. The emphasis is on the measurement and correlation of global observables on an event-by-event basis and the use of hard scattering of partons to probe the properties of high density ...

近期，rhic-star国际合作实验在世界上首次证实了从纯能量产生正反物质对的基本物理过程，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。

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 …

The RHIC/STAR experiment data taking is initiated from BNL where its data workflow begins. The STAR detector system is currently composed of eight major detector sub-systems (BE MC, EEMC, TPC, HFT, FGT, TOF, GEM, MTD) and numerous triggering systems making the whole data flow composed of ten main area of software coordination.

Abstract. The STAR experiment at RHIC concentrates on the tracking of charged hadrons via ionization in gas- and silicon-based detectors, and the de-tection of electrons and photons via calorimetry, in a wide and azimuthally complete acceptance that’s unique at RHIC. STAR’s ab ility to …