报告题目：Probing Strongly-Interacting Matter with Dilepton Production in HICs
报告人：孙开佳 青年研究员（复旦大学）
报告时间：2025年1月15日 10：00-11：00
报告地点：理8栋118报告厅
报告摘要：
Because of their weak interactions with the strongly interacting matter produced in relativistic heavy-ion collisions, dileptons provide an ideal probe of the early dynamics of these collisions. In a recent work, we study dilepton production using a partonic transport model that is based on an extended Nambu-Jona-Lasinio (NJL) model. In this model, the in-medium quark masses decrease with increasing temperature as a result of the restoration of chiral symmetry. We find that the extracted temperature from dileptons of intermediate masses agrees well with the temperature of the partonic matter, suggesting that dilepton production can be used as a thermometer for the produced partonic matter. Our results also indicate that the extracted in-medium quark masses decrease with increasing dilepton temperature, implying that dilepton production can further serve as a probe of chiral symmetry restoration in high energy heavy-ion collisions.
报告人简介：
孙开佳, 复旦大学核科学与技术系/现代物理研究所青年研究员。2017年获上海交通大学博士学位。其后在美国德州农工大学从事博士后研究 (2018−2022)。2022年加入复旦大学现代物理研究所。主要从事高能核反应的理论研究工作。当前研究方向是相对论重离子碰撞中的QCD相变，反物质轻核产生机制，自旋极化效应和量子多体输运理论研究。获得上海市青年领军人才称号，目前主持国家优秀青年科学基金项目和科技部重点研发计划青年科学家项目等。