论文标题
二阶校准校正的重子和电动累积量的比率
Ratio of baryon and electric-charge cumulants at second order with acceptance corrections
论文作者
论文摘要
我们从最新的实验结果中评估了Baryon和电荷累积量的比率，该结果以$ \ sqrt {s _ {_ {_ {nn}}} = 200 $ GEV的星星协作。重骨数累积剂是从质子数分布中重建的，并且假设有限接受对横向动量的影响被校正，假设具有独立的粒子发射。我们表明，获得的比率对速度窗口有依赖性。将结果与强子共振气体模型和晶格QCD数值模拟的比较表明，如果从热培养基中产生波动，其温度显着低于化学冷冻温度。
We evaluate the ratio of baryon and electric-charge cumulants at second order from the recent experimental results at $\sqrt{s_{_{NN}}}=200$ GeV by the STAR Collaboration. The baryon number cumulant is reconstructed from the proton number distribution, and effects of the finite acceptance on the transverse momentum are corrected assuming the independent particle emission. We show that the obtained ratio has a dependence on the rapidity window. Comparison of the result with the hadron resonance gas model and lattice QCD numerical simulations suggests that if the fluctuations are generated from a thermal medium its temperature is significantly lower than the chemical freezeout temperature.
