An experiment study on the quark matter properties and QCD phase structure at RHIC
Abstract
<p indent="0mm">In this paper, we review the recent results from relativistic heavy-ion collision experiments at Relativistic Heavy Ion Collider—Solenoidal Tracker at RHIC (RHIC-STAR), primarily focusing on collective flow; high moments of conserved quantities; and the production of light nuclei, heavy flavor and strange hadrons. The experiment discovered thermalized quark matter in high-energy heavy-ion collisions. With measurements from RHIC-STAR Beam Energy Scan Phase I, several observables indicate the Quantum chromodynamics (QCD) critical region exists below collision energy <inline-formula id="INLINE70"><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:msub other="0"><mml:mi other="0">s</mml:mi><mml:mrow other="1"><mml:mtext other="1">NN</mml:mtext></mml:mrow></mml:msub></mml:mrow></mml:msqrt></mml:mrow></mml:math></inline-formula> = <sc>39 GeV.</sc> Finally, we discuss ongoing global facilities for beam energy scan experiments and the research direction of QCD phase structure.</p>
