标题： 初始重子阻止和状态方程的约束来自定向流 显示英文标题

标题： Constraints on initial baryon stopping and equation of state from directed flow

摘要： 我们的研究聚焦于 Au+Au 碰撞中识别粒子的快度依赖性定向流 $v_1(y)$，跨越从 7.7 到 200 GeV 的广泛碰撞能量范围 $\sqrt{s_{\rm NN}}$。利用一个 (3+1) 维的混合框架，我们成功重现了考虑范围内能量的介子和重子测量值 $v_1(y)$ 的特征。值得注意的是，我们的分析揭示了重子 $v_1(y)$ 对初始重子阻止机制的约束能力。结合介子 $v_1(y)$，定向流成为探测有限化学势下密集核物质状态方程的关键工具。 显示英文摘要

摘要： Our investigation focuses on the rapidity-dependent directed flow, $v_1(y)$, of identified hadrons in Au+Au collisions across a broad range of $\sqrt{s_{\rm NN}}$ from 7.7 to 200 GeV. Employing a (3+1)-dimensional hybrid framework, our study successfully reproduces the characteristic features of the measured $v_1(y)$ for both mesons and baryons across the considered beam energies. Notably, our analysis reveals the constraining power of baryonic $v_1(y)$ on the initial baryon stopping mechanism. Together with mesonic $v_1(y)$, the directed flow serves as a crucial tool for probing the equation of state governing dense nuclear matter at finite chemical potentials.