  A current focus at RHIC is the Beam Energy Scan to study the QCD phase
diagram -- temperature ($T$) vs. baryon chemical potential ($\mu_{B}$). The
STAR experiment has collected data for Au+Au collisions at $\sqrt{s_{NN}}=$ 7.7
GeV, 11.5 GeV, and 39 GeV in the year 2010. We present midrapidity results on
rapidity density, average transverse mass, and particle ratios for identified
hadrons from the STAR experiment. Collision dynamics are studied in the
framework of chemical and kinetic freeze-out conditions.
