论文标题
在54.4 GEV的AU-AU碰撞中，对Hadronic物质的集体特性的分析
Analyses of the collective properties of hadronic matter in Au-Au collisions at 54.4 GeV
论文作者
论文摘要
我们调查了Au-au碰撞中的奇怪的Hadrons横向动量（$ p_t $）光谱，$ \ sqrt {s_ {nn}} $ = 54.4 GEV在修改后的Hagedorn函数框架中具有嵌入式流量的框架。我们提取了动力学冻结温度$ T_0 $，横向流量$β_T$，动力学冻结卷$ v $，平均横向动量$ <p_t> $，熵参数$ n $和Muluftplicity参数$ n_0 $。我们报告说，所有这些参数都增加了中央碰撞。与周围碰撞相比，中央碰撞中的较大动力学冷冻温度，横向流速，动力学冻结体积和熵参数（N）显示了中央碰撞中粒子的早期解耦。另外，以上所有参数均取决于质量。动力学冻结温度（$ t_0 $），熵参数$ n $和平均横向动量（$ <p_t> $）对于大型颗粒而言较大，而横向流速（$β_T$），动态冻结量（$ v $）和乘数free量（$ v $）和乘数参数（$ n_0 $）显示出相反的行为。较大的$ t_0 $，$ n $和较小的$β_T$以及较重的颗粒的$ v $表示较重的颗粒的早期冻结，而较大的较重颗粒的较大$ <p_t> $表明，径向流动的效果在较重的颗粒中较大。每个粒子的单独参数集显示了多个动力学冻结场景，其中质量依赖的动力学冻结体积显示了体积差异冻结场景。我们还检查了不同参数之间的相关性，其中包括$ t_0 $和$β_T$，$ t_0 $和$ v $，$β_T$和$β_T$和$ v $，$ <p_t> $和$ t_0 $，$ t_0 $，$ <p_t> $和$β_T$，$β_T$，$ n $和$ n和$ n和$ n和$ n $ n $ n $ n $ n $ n $ n $ n $ n $ n和tt $ n和tt $ n和tt $ n和tt $ n $ n和tt $ n和$ n $和$ v $，都观察到它们彼此之间具有正相关，从而证实了我们的结果。
We investigated the strange hadrons transverse momentum ($p_T$) spectra in Au-Au collision at $\sqrt {s_{NN}}$ = 54.4 GeV in the framework of modified Hagedorn function with embedded flow. We extracted the kinetic freeze-out temperature $T_0$, transverse flow velocity $β_T$, kinetic freeze-out volume $V$, mean transverse momentum $<p_T>$, the entropy parameter $n$ and the multiplicity parameter $N_0$. We reported that all these parameters increase towards the central collisions. The larger kinetic freeze-out temperature , transverse flow velocity, kinetic freeze-out volume and the entropy parameter (n) in central collisions compared to peripheral collisions show the early decoupling of the particles in central collisions. In addition, all the above parameters are mass dependent. The kinetic freeze-out temperature ($T_0$), the entropy parameter $n$ and mean transverse momentum ($<p_T>$) are larger for massive particles, while the transverse flow velocity ($β_T$), kinetic freeze-out volume ($V$) and the multiplicity parameter ($N_0$) show the opposite behavior. Larger $T_0$, $n$ and smaller $β_T$ as well as $V$ of the heavier particles indicates the early freeze-out of the heavier particles, while larger $<p_T>$ for the heavier particles evince that the effect of radial flow is stronger in heavier particles. The separate set of parameters for each particle shows the multiple kinetic freeze-out scenario, where the mass dependent kinetic freeze-out volume shows the volume differential freeze-out scenario. We also checked the correlation among different parameters, which include the correlation of $T_0$ and $β_T$, $T_0$ and $V$, $β_T$ and $V$, $<p_T>$ and $T_0$, $<p_T>$ and $β_T$, $<p_T>$ and $V$, $n$ and $T_0$, $n$ and $β_T$, and $n$ and $V$, and they all are observed to have positive correlations with each other which validates our results.
