论文标题
通过强子生产研究的QCD相变
QCD phase transition studied by means of hadron production
论文作者
论文摘要
这是对我们的工作的简要回顾，描述了在相对论重型离子碰撞中形成的QGP火球的强调过程。我们介绍了强子多重性分析的共享方法。使用此工具，我们以一致的连续方式描述了在可用的反应能量和中心范围内产生的所有哈登的产率。可以通过考虑所有原发性辐射颗粒来理解火球最终状态的特性。在SPS，RHIC和LHC创建的密集的强子火球表明，最终状态仅通过以下方式区分：i）体积变化； ii）味道（陌生，魅力）内容。相反，新兴粒子加起来以创建通用的强调压力$ p = 80 \ pm 3 $ meV/fm $^3 $用于所有被考虑的碰撞系统。发现大型火球的熵含量相对陌生，是化学QGP平衡附近的夸克 - 胶状等离子体自由度的相对陌生性。 SPS，RHIC和LHC常见的这种“通用强环化”条件与拟议中的QGP火球直接蒸发到自由流式Hadron的反应图片一致。
This is a brief review of our work describing the hadronization process of a QGP fireball formed in relativistic heavy-ion collisions. We introduce the SHARE method of analysis of hadron multiplicities. Using this tool we describe in consistent continuos manner the yield of all hadrons produced in the available range of reaction energies and centralities. The properties of the fireball final state can be understood by considering all primary hadronic particles. The dense hadron fireball created at SPS, RHIC, and LHC shows that the final state is differentiated solely by: i) volume changes; and ii) flavor (strangeness, charm) content. Conversely, emerging particles add up to create universal hadronization pressure $P = 80 \pm 3$ MeV/fm$^3$ for all considered collision systems. The relative strangeness to entropy content of a large fireball is found to be that of quark-gluon plasma degrees of freedom near the chemical QGP equilibrium. This 'Universal Hadronization' condition common to SPS, RHIC, and LHC agrees with the proposed reaction picture of a direct QGP fireball evaporation into free-streaming hadrons.
