AI 中文总结
研究Xe+Cs(I)碰撞中质子与氘核定向流，对比BM@N初步实验数据与THESEUS模型计算，检验重子丰密物质集体动力学及轻核形成热力学机制。
AI 中文摘要
本文给出了在3.8A GeV能量下Xe+Cs(I)碰撞中，10-40%中心度区间内质子与氘核定向流（v₁）的BM@N初步结果。将测量得到的v₁快度依赖关系与THESEUS事例产生器的计算结果对比，该模型采用晚冻出方案，使氘核与强子按热力学方式等量产生。尽管THESEUS能较好描述质子v₁数据，但在低快度和中快度区域会轻微且系统地高估氘核流。此对比可检验Nuclotron能区下重子丰密物质的集体动力学及轻核形成的热力学机制。
英文摘要
Preliminary BM@N results on the directed flow ($v_1$) of protons and deuterons in Xe+Cs(I) collisions at 3.8$A$ GeV are presented for the 10-40% centrality interval. The measured rapidity dependence of $v_1$ is compared with calculations from the THESEUS event generator, where deuterons are produced thermodynamically on an equal basis with hadrons using a late freeze-out scenario. While THESEUS well describes the proton $v_1$ data, it shows a slight but systematic overestimation of the deuteron flow at low and intermediate rapidities. This comparison tests both the collective dynamics of baryon-rich matter and the thermodynamic mechanism of light-nucleus formation at Nuclotron energies.
Comments4 pages, 1 figure, MMCP 2026 proceedings
