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We report the measurements of $\Lambda$ hyperons' global and local spin polarization from second phase of the RHIC Beam Energy Scan (BES-II) in Au+Au collisions at $\sqrt{s_{NN}}$= 7.7--27 GeV. Global polarization measurements of…

Nuclear Experiment · Physics 2024-12-16 Q. Hu

With the experimental data from STAR and PHENIX on the centrality dependence of the $p_T$ spectra of protons and anti-protons produced at mid-rapidity in Au+Au collisions at 200 GeV, we show that for protons and anti-protons there exists a…

Nuclear Theory · Physics 2008-11-26 W. C. Zhang , Y. Zeng , W. X. Nie , L. L. Zhu , C. B. Yang

Transverse momentum spectra of $\pi^{\pm}$, $p$ and $\bar{p}$ up to 12 GeV/c at mid-rapidity in centrality selected Au+Au collisions at $\sqrt{s_{_{NN}}} = 200$ GeV are presented. In central Au+Au collisions, both $\pi^{\pm}$ and…

Nuclear Experiment · Physics 2012-08-27 STAR Collaboration

In non-central nuclear collisions, the created matter should exhibit strong vorticity, which induces spin polarization. Global polarization is a good tool to investigate the dynamics of the system. Global polarization of $\Lambda$ and…

Nuclear Experiment · Physics 2022-02-16 Kosuke Okubo

The preliminary results of $\pi^{\pm}, K^{\pm}, p$ and $\bar{p}$ spectra are reported from Au+Au collisions at $\sqrt{s_{_{NN}}} = 62.4$ GeV. Particle identification is from the Time Projection Chamber and Time-of-Flight system at STAR. The…

Nuclear Experiment · Physics 2011-07-19 Lijuan Ruan

This work presents measurements of the rapidity-window dependence of event-by-event net-proton cumulants and proton factorial cumulants in Au+Au collisions at $\sqrt{s_\mathrm{NN}}=$7.7 -- 27 GeV, using high-statistics data from RHIC…

Nuclear Experiment · Physics 2025-12-19 Yige Huang

We have studied the centrality dependence of charged particle forward-backward multiplicity correlation strength in Au+Au collisions at $\sqrt{s_{NN}}$=200 GeV with a parton and hadron cascade model, PACIAE, based on PYTHIA. The calculated…

Nuclear Theory · Physics 2010-06-01 Yu-Liang Yan , Dai-Mei Zhou , Bao-Guo Dong , Xiao-Mei Li , Hai-Liang Ma , Ben-Hao Sa

We present results on strange particle production in p+p, d+Au and Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV. We discuss the nuclear modification factors ($R_{CP}$) and ratios of particle yields in order to investigate the range of…

Nuclear Experiment · Physics 2008-11-26 Jana Bielcikova

We report the measurement of Lamda and Anti-Lamda yields and inverse slope parameters in d + Au collisions at sqrt(s_NN) = 200 GeV at forward and backward rapidities (y = +- 2.75), using data from the STAR forward time projection chambers.…

Nuclear Experiment · Physics 2008-11-26 STAR Collaboration , B. I. Abelev

We present preliminary results on two new two-particle correlation analyses of Au+Au collisions at $\sqrt{s_{NN}} = 130 GeV$ performed by the STAR collaboration. Two-pion interferometry with respect to the reaction plane shows that the pion…

Nuclear Experiment · Physics 2007-05-23 F. Retiere

Two-particle correlation functions were measured for $\rm p\overline{p}$, $\rm p\overline{\Lambda}$, $\rm \overline{p}\Lambda$, and $\Lambda\overline{\Lambda}$ pairs in Pb-Pb collisions at $\sqrt{s_{\rm NN}}=2.76$ TeV and $\sqrt{s_{\rm…

Nuclear Experiment · Physics 2020-06-19 ALICE Collaboration

Using the forward time projection chambers of the STAR experiment at the Brookhaven Relativistic Heavy Ion Collider we measure the centrality dependent Lambda and Anti-Lambda yields and inverse slope parameters in d+Au collisions at forward…

Nuclear Experiment · Physics 2019-08-14 Frank Simon

We present preliminary results from a two-pion intensity interferometry analysis from Au+Au collisions at sqrt{s_{NN}}=200 GeV measured in the STAR detector at RHIC. The dependence of the apparent pion source on multiplicity and transverse…

Nuclear Experiment · Physics 2007-05-23 Mercedes Lopez Noriega

The STAR Beam Energy Scan program has found a difference in the global polarization of $\Lambda$s and $\bar{\Lambda}$s produced in $Au+Au$ collisions. This difference is larger for lower center of mass collision energies. In this work we…

High Energy Physics - Phenomenology · Physics 2020-10-27 A. Ayala , E. Cuautle , I. Domínguez , I. Maldonado , J. Salinas , M. E. Tejeda-Yeomans

Transverse momentum spectra and rapidity densities, dN/dy, of protons, anti-protons, and net--protons (p-pbar) from central (0-5%) Au+Au collisions at sqrt(sNN) = 200 GeV were measured with the BRAHMS experiment within the rapidity range 0…

Nuclear Experiment · Physics 2012-08-27 BRAHMS Collaboration

Two particle correlations between identified meson and baryon trigger particles with 2.5 < p_T < 4.0 GeV/c and lower p_T charged hadrons have been measured at midrapidity by the PHENIX experiment at RHIC in p+p, d+Au and Au+Au collisions at…

Nuclear Experiment · Physics 2008-11-26 PHENIX Collaboration , S. S. Adler

We present results from Experiment E917 for antilambda and antiproton production in Au+Au collisions at 11.7 A GeV. We have measured invariant spectra and yields for both species in central and peripheral collisions. We find that the…

Measurements are reported of the production of high energy pi-zero mesons from the STAR experiment in p+p and d+Au collisions at sqrt(s_NN)=200 GeV and <eta>=4.00 (d beam direction). The inclusive yield agrees with perturbative QCD…

High Energy Physics - Experiment · Physics 2019-08-14 G. Rakness

Azimuthal correlations for large transverse momentum charged hadrons have been measured over a wide pseudo-rapidity range and full azimuth in Au+Au and p+p collisions at $\sqrt{s_{NN}}$ = 200 GeV. The small-angle correlations observed in…

Nuclear Experiment · Physics 2008-11-26 C. Adler

The STAR experiment has measured the production of charged hadrons and identified charged pions as a function of transverse momentum, (pseudo-)rapidity, and centrality in Au+Au collisions at sqrt(s_NN)=130GeV. The mean transverse momentum…

Nuclear Experiment · Physics 2012-08-27 STAR Collaboration
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