格点量子色动力学的净重子数分布的偏度、峰度和五阶、六阶累积量与高统计量的STAR数据的比较
Skewness, kurtosis and the 5th and 6th order cumulants of net baryon-number distributions from lattice QCD confront high-statistics STAR data
摘要：
我们提出了新的结果高达$6^{th}$级累积的净重子数波动在小值的重子化学势，$μ_B$，得到的格点量子色动力学计算与物理值的光和奇怪的夸克质量。高阶累积量的泰勒展开表示的两个最低阶累积量的比率，$M_B/σ_B^2=χ_1^B(T,μ_B)/χ_2^B(T,μ_B)$，允许一个参数自由的比较与净质子数累积量的数据获得的STAR合作在RHIC的束能量扫描。我们表明，最近的高统计数据的偏度和峰度比的净质子数分布，获得在束能量$\sqrt{s_{_{NN}}}=54.4$ GeV，符合格点量子色动力学结果的净重子数起伏的累积量接近的赝临界温度，$T_{pc}(μ_B)$，在QCD的手征跃迁。我们还提出了第一个结果，从次到领先的顺序扩展的$5^{th}$和$6^{th}$顺序累积量的伪临界温度。
英文摘要：
We present new results on up to $6^{th}$ order cumulants of net baryon-number fluctuations at small values of the baryon chemical potential, $μ_B$, obtained in lattice QCD calculations with physical values of light and strange quark masses. Representation of the Taylor expansions of higher order cumulants in terms of the ratio of the two lowest order cumulants, $M_B/σ_B^2=χ_1^B(T,μ_B)/χ_2^B(T,μ_B)$, allows for a parameter free comparison with data on net proton-number cumulants obtained by the STAR Collaboration in the Beam Energy Scan at RHIC. We show that recent high statistics data on skewness and kurtosis ratios of net proton-number distributions, obtained at beam energy $\sqrt{s_{_{NN}}}=54.4$ GeV, agree well with lattice QCD results on cumulants of net baryon-number fluctuations close to the pseudo-critical temperature, $T_{pc}(μ_B)$, for the chiral transition in QCD. We also present first results from a next-to-leading order expansion of $5^{th}$ and $6^{th}$ order cumulants on the line of pseudo-critical temperatures.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
