论文标题
在少数GEV能量状态下，重型离子碰撞的球体扩展和冻结的几何形状
Spheroidal expansion and freeze-out geometry of heavy-ion collisions in the few-GeV energy regime
论文作者
论文摘要
提出了在少数GEV能量制度中重型离子碰撞中产生的辐射物质扩展的球体模型。它构成了我们先前作品中使用的球形对称西门子 - 拉斯姆森爆炸模型的扩展。扩展的球体形式与单冻结场景相结合，可以显着改善对横向质量和生成颗粒的速度分布的描述。通过模型参数由Hadronic丰度和光谱确定，我们对PION HBT相关半径进行了进一步的预测，这些半径与测得的相关性是定性的一致性。数据的总体成功描述支持了该能量范围内生成的HADRONIC系统的球体对称性概念。
A spheroidal model of the expansion of hadronic matter produced in heavy-ion collisions in the few-GeV energy regime is proposed. It constitutes an extension of the spherically symmetric Siemens-Rasmussen blast-wave model used in our previous works. The spheroidal form of the expansion, combined with a single-freeze-out scenario, allows for a significantly improved description of both the transverse-mass and the rapidity distributions of the produced particles. With the model parameters determined by the hadronic abundances and spectra, we make further predictions of the pion HBT correlation radii that turn out to be in a qualitative agreement with the measured ones. The overall successful description of the data supports the concept of spheroidal symmetry of the produced hadronic systems in this energy range.
