Results from the STAR Beam Energy Scan Program

Abstract The main aim of the beam energy scan (BES) program at the Relativistic Heavy-Ion Collider (RHIC) is to explore the quantum chromodynamics (QCD) phase diagram. The specific physics goal is to search for the phase boundary and the QCD critical point. We present results from Au+Au collisions at various energies collected in the BES program by the Solenoidal Tracker At RHIC (STAR) experiment. First results on transverse momentum ( p T ) spectra, d N / d y , and average transverse mass ( 〈 m T 〉 ) for identified hadrons produced at mid-rapidity for s N N = 7.7 GeV are presented. Centrality dependence of d N / d y and 〈 p T 〉 are also discussed and compared to corresponding data from other energies. In addition, first results on charged hadron directed ( v 1 ) and elliptic flow ( v 2 ) for s N N = 7.7 , 11.5 and 39 GeV are presented. New results on event-by-event fluctuations (particle ratio, net-proton and net-charge higher moments) are presented for s N N = 39 GeV .

• Publication year

  2011

• Venue

  Nuclear Physics

• Publication date

  2011-01-22

• Fields of study

  Physics

• Identifiers
  DOI 10.1016/j.nuclphysa.2011.05.030arXiv 1101.4310
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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