论文标题
在BNL相对论重离子对撞机上可用的能量上的净trang trangeness多样性分布的累积物
Cumulants of net-strangeness multiplicity distributions at energies available at the BNL Relativistic Heavy Ion Collider
论文作者
论文摘要
广泛研究了净蛋白质数，净付费和网络差异分布的高阶累积物，以搜索量子 - 染色体动力学临界点，并提取重离子碰撞中的化学冷冻参数。在这种情况下，净 - 差异性分布的事件波动在提取陌生部门的化学冻结参数方面起着重要作用。由于难以通过事件检测所有奇怪的黑龙事件，因此Kaon（$ k $）和Lambda（$λ$）粒子是重型离子碰撞中与陌生相关的可观察物的代理。我们已经研究了净$ K $，net-$λ$和net - （$ k $ + $ + $λ$）多重分布，并使用超层次量子分子动力学模型和强子共振气体计算计算了其不同的累积顺序。为了充分说明净3型累积物，已经发现，必须将共振损失贡献包含在$ k $中，而$λ$是必需的。
The higher-order cumulants of net-proton number, net-charge, and net-strangeness multiplicity distributions are widely studied to search for the quantum-chromodynamics critical point and extract the chemical freeze-out parameters in heavy-ion collisions. In this context, the event-by-event fluctuations of the net-strangeness multiplicity distributions play important roles in extracting the chemical freeze-out parameter in the strangeness sector. Due to having difficulties in detecting all strange hadrons event by event, the kaon ($K$) and lambda ($Λ$) particles serve as a proxy for the strangeness-related observables in heavy-ion collisions. We have studied the net-$K$, net-$Λ$, and net-($K$ + $Λ$) multiplicity distributions and calculated their different order of cumulants using the ultrarelativistic quantum molecular dynamics model and hadron resonance gas calculation. To adequately account for the net-strangeness cumulants, it has been found that the inclusion of resonance decay contributions in $K$ and $Λ$ is necessary.
