Identified particle production and freeze-out properties in heavy-ion collisions at RHIC Beam Energy Scan program

Understand

The first phase of Beam Energy Scan (BES) program at the Relativistic Heavy-Ion Collider (RHIC) was started in the year 2010 with the aim to study the several aspects of the quantum chromodynamics (QCD) phase diagram.

• The Solenoidal Tracker At RHIC (STAR) detector has taken data at $\sqrt{s_{NN}} = $ 7.7, 11.5, 19.6, 27, and 39 GeV in Au+Au collisions in the years 2010 and 2011 as part of the BES programme.
• For these beam energies, we present the results on the particle yields, average transverse mass and particle ratios for identified particles in mid-rapidity ($|y|$ < 0.1).
• The measured particle ratios have been used to study the chemical freeze-out dynamics within the framework of a statistical model.