论文标题
从AGS到LHC能量
Features of hadronic and deconfined matter from AGS to LHC energies
论文作者
论文摘要
先前关于平均横向动量依赖性，其斜率作为强子质量的函数以及对碰撞伴侣碰撞伙伴的颗粒多数性多数和单位横向重叠面积的广泛研究扩展到能量密度与熵密度的比率。 平均横向动量与平均粒子多样性的平方根与单位横向重叠面积$ \ langle p_t \ rangle/\ sqrt {\ langle dn/dy \ rangle/s _ {\ langle dn/s _ {\ perp}} $ collision collision collition a in function A in Function a in Function A in function或基于CGC和基于渗透的方法的预测。能量密度$ \ langle de_ {t}/dy \ rangle/s _ {\ perp} $与熵密度$ \ langle dn/dy \ rangle/s _ {\ perp} $在不同的碰撞中心的collisions ags，sps sps，rhic和lhc collist colligiss，rhc collive cullige collig cullig和lhc的比率的依赖性。该比率在最高的RHIC能量之后，在LHC能量处急剧上升的趋势与40年前做出的理论预测一致，这表明这种行为是相变的标志。这种模式在很大程度上取决于碰撞几何形状，趋向于表征PP最小偏差（MB）碰撞的依赖性。 LHC能量处的PP和PB-PB碰撞之间的预期相似性得到了证实。
Previous extensive studies on the dependence of the average transverse momentum, its slope as a function of the hadron mass and the average transverse expansion on the particle multiplicity per unit rapidity and unit transverse overlap area of the colliding partners are extended to the ratio of the energy density to the entropy density. The behaviour of the ratio between the average transverse momentum and the square root of the particle multiplicity per unit rapidity and unit transverse overlap area $\langle p_T \rangle/\sqrt{\langle dN/dy\rangle/S_{\perp}}$ as a function of collision energy for a given centrality or as a function of centrality for a given collision energy supports the predictions of CGC and percolation based approaches. The dependence of the ratio of the energy density $\langle dE_{T}/dy\rangle/S_{\perp}$ to the entropy density $\langle dN/dy\rangle/S_{\perp}$ at different collision centralities for A-A collisions from AGS, SPS, RHIC and LHC energies is presented. The trend of this ratio towards a plateau at the highest RHIC energies followed by a steep rise at LHC energies is in agreement with theoretical predictions made 40 years ago that indicate this behaviour as a signature of a phase transition. This pattern strongly depends on the collision geometry, converging towards the dependence that characterizes the pp minimum bias (MB) collisions for the most peripheral A-A collisions. Expected similarities between pp and Pb-Pb collisions at LHC energies are confirmed.
