发表机构
GSI Helmholtzzentrum für Schwerionenforschung GmbH; Institute for Theoretical Physics, Johann Wolfgang Goethe Universität; Helmholtz Research Academy Hessen for FAIR (HFHF); SUBATECH UMR 6457 (IMT Atlantique, Université de Nantes, IN2P3/CNRS); Frankfurt Institute for Advanced Studies（GSI亥姆霍兹重离子研究中心; 约翰·沃尔夫冈·歌德大学理论物理研究所; 黑森FAIR亥姆霍兹研究学院; SUBATECH UMR 6457（大西洋高等矿业学院、南特大学、IN2P3/CNRS）; 法兰克福高等研究院）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究人员采用PHSD输运方法，引入Remler形式化方法，在SPS能量下验证其对pp、pA碰撞粲夸克偶素产生的描述，外推至FAIR能量给出预测，为QCD相结构实验提供理论指导。
AI 中文摘要
我们采用部分子-强子-弦动力学（PHSD）输运方法，研究重子丰密物质对粲夸克偶素产生与解离的影响。引入雷姆勒（Remler）形式化方法，对粲夸克-反粲夸克对形成粲夸克偶素的过程进行动力学建模。作为验证步骤，该形式化方法首先通过基础pp碰撞的实验数据进行基准测试，随后扩展至pA系统以提取粲夸克偶素的有效核吸收截面。该提取的截面可后续应用于重离子碰撞中，以量化介质诱导效应。我们的结果表明，雷姆勒形式化方法能定量一致地描述SPS能量下pp与pA碰撞中的粲夸克偶素产生。该方法随后被外推至GSI/FAIR能量，给出粲夸克偶素产额与存活概率的预测。这些发现凸显了雷姆勒形式化方法作为研究重子丰密物质中重夸克束缚态形成的动力学框架的重要性，并为SPS、FAIR及NICA旨在绘制QCD相结构的未来实验项目提供理论指导。
英文摘要
We employ the Parton-Hadron-String Dynamics (PHSD) transport approach to investigate the influence of baryon-rich matter on charmonium production and dissociation. The Remler formalism is implemented to dynamically model charmonium formation from charm-anticharm pairs. As a validation step, the formalism is first benchmarked against experimental data from elementary pp collisions and then extended to pA systems to extract the effective nuclear absorption cross section of charmonium. This extracted cross section can subsequently be applied in heavy-ion collisions to quantify medium-induced effects. Our results demonstrate that the Remler formalism provides a quantitatively consistent description of charmonium production in pp and pA collisions at SPS energies. The approach is then extrapolated to GSI/FAIR energies, where predictions for charmonium yields and survival probabilities are presented. These findings highlight the relevance of the Remler formalism as a dynamical framework for studying heavy-quark bound-state formation in baryon-rich matter and offer theoretical guidance for future experimental programs at SPS, FAIR and NICA aimed at mapping the QCD phase structure.
Comments4 pages, 3 figures, SQM 2026
