Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at [sqrt]sNN=9.2 GeV
نویسندگان
چکیده
Citation STAR Collaboration et al. " Identified particle production, azimuthal anisotropy, and interferometry measurements in Au+Au collisions at [sqrt]sNN=9.2 GeV. " Physical Review C 81.2 (2010): 024911. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We present the first measurements of identified hadron production, azimuthal anisotropy, and pion interferometry from Au + Au collisions below the nominal injection energy at the BNL Relativistic Heavy-Ion Collider (RHIC) facility. The data were collected using the large acceptance solenoidal tracker at RHIC (STAR) detector at √ s NN = 9.2 GeV from a test run of the collider in the year 2008. Midrapidity results on multiplicity density dN/dy in rapidity y, average transverse momentum p T , particle ratios, elliptic flow, and Hanbury-Brown–Twiss (HBT) radii are consistent with the corresponding results at similar √ s NN from fixed-target experiments. Directed flow measurements are presented for both midrapidity and forward-rapidity regions. Furthermore the collision centrality dependence of identified particle dN/dy, p T , and particle ratios are discussed. These results also demonstrate that the capabilities of the STAR detector, although optimized for √ s NN = 200 GeV, are suitable for the proposed QCD critical-point search and exploration of the QCD phase diagram at RHIC.
منابع مشابه
Identified particle production, azimuthal anisotropy, and interferometry measurements in Au plus Au collisions at root s(NN)=9.2 GeV
متن کامل
9 Particle Production in Au + Au Collisions at √ s NN = 9 . 2 GeV
In this report we present the first test run results from Au+Au collisions at √ sNN = 9.2 GeV at RHIC. The large acceptance STAR detector has collected 3k minimum bias collisions during this test run. The azimuthal anisotropy, identified particle spectra, particle ratios and HBT radii are observed to be consistent with the previous measurements from CERN SPS at similar center of mass energies. ...
متن کاملAzimuthal di-hadron correlations in d+ Au and Au+Au collisions at sNN=200 GeV measured at the STAR detector
Citation Aggarwal, M. et al. " Azimuthal di-hadron correlations in d+ Au and Au+Au collisions at sqrt[s_{NN}]=200 GeV measured at the STAR detector. " Physical Review C 82.2 (2010): n. pag. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly...
متن کاملAzimuthal Anisotropy of Charged and Identified High pT Hadrons in Au+Au Collisions at RHIC
We report new results on v2(pT ) for Au+Au collisions at √ sNN=200 GeV for charged hadrons, pions, kaons, (anti)protons, K s , and Λ. The analysis is extended to pT = 12 GeV/c for charged hadrons and pT = 4 GeV/c for identified particles. A comparison of the azimuthal anisotropy of charged hadrons measured at √ sNN=130 and 200 GeV is presented. The pT -dependence of baryon versus meson elliptic...
متن کاملRecent results from STAR experiment in Au + Au collisions at √ s
Theoretical models suggest that the Quantum Chromo-Dynamics (QCD) phase diagram has a critical point demarcating the order of transition between the two phases: the hadron gas, in which the quarks are confined and the Quark-Gluon Plasma (QGP). The central goal of the experiments with relativistic heavy-ion collisions is to create and study such form of matter called the QGP and understand the Q...
متن کامل