Identified particle production, azimuthal anisotropy, and interferometry measurements in Au plus Au collisions at root s(NN)=9.2 GeV
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
---|---|
Data(s) |
18/04/2012
18/04/2012
2010
|
Resumo |
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 root 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 root 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 root s(NN) = 200 GeV, are suitable for the proposed QCD critical-point search and exploration of the QCD phase diagram at RHIC. Offices of NP within the US DOE Office of Science US DOE Office of Science US NSF National Science Foundation Sloan Foundation Deutsche Forschungsgemeinschaft - DFG cluster of excellence 'Origin and Structure of the Universe' RA RPL EMN of France STFC EPSRC of the United Kingdom FAPESP of Brazil MES Russian Ministry of Sci. and Tech. National Natural Science Foundation of China (NNSFC) CAS of China MoST of China MoE of China IRP GACR of the Czech Republic FOM of the Netherlands (DAE) Department of Atomic Energy, India (DST) Department of Science and Technology, India (CSIR) Council of Scientific and Industrial Research - India Polish State Committee for Scientific Research Korea Sci. & Eng. Foundation (KOSEF) Korea Research Foundation (KRF) Centre National de la Recherche Scientifique [CNRS/IN2P3] |
Identificador |
PHYSICAL REVIEW C, v.81, n.2, 2010 0556-2813 http://producao.usp.br/handle/BDPI/16306 10.1103/PhysRevC.81.024911 |
Idioma(s) |
eng |
Publicador |
AMER PHYSICAL SOC |
Relação |
Physical Review C |
Direitos |
restrictedAccess Copyright AMER PHYSICAL SOC |
Palavras-Chave | #HEAVY-ION COLLISIONS #QUARK-GLUON PLASMA #RELATIVISTIC NUCLEAR COLLISIONS #RESISTIVE PLATE CHAMBERS #TIME PROJECTION CHAMBER #QCD PHASE-TRANSITION #FINITE-TEMPERATURE #HADRON-PRODUCTION #PION INTERFEROMETRY #COULOMB CORRECTIONS #Physics, Nuclear |
Tipo |
article original article publishedVersion |