强子物理在线论坛 Hadron Physics Online Forum (HAPOF)

第一百一十八期HAPOF论坛,Model-independent determination of gravitational form factors from dispersion relations,曹雄辉 博士,2025年08月22日

Asia/Shanghai
Description
报告人: 曹雄辉 博士(中科院理论所)
报告时间:2025年08月22日 15:00 - 17:30 (北京时间)
会议链接:点击链接

摘要:
The gravitational form factors of the nucleon, which are closely connected to the origin 
of its mass, have attracted significant attention in recent years. Dispersive methods, 
combined with chiral perturbation theory (ChPT), provide a powerful framework for precise 
predictions in the study of hadrons. In this talk, I will present the model-independent 
determinations of the gravitational form factors of the pion, kaon and nucleon at the 
physical pion mass, using moderndata-driven dispersive approach. We achieve precise 
determination of the so-called “last global unknown property” of the nucleon, D-term and 
various root mean square radii. Additionally, I will discuss how our dispersion relation 
results match with ChPT at NNLO, providing determinations for the unknown low-energy 
constants c8 and c9.

报告人简介:
曹雄辉,中国科学院理论物理研究所助理研究员。2018年获得东南大学物理学学士学位,2023年获得北京大学理论物理学
博士学位。随后在中国科学院理论物理研究所做博士后研究。主要研究方向为色散关系方法、手征有效理论在强子物理中的
应用。在本领域期刊上发表论文10余篇,主持完成国家自然科学基金理论物理专款、中国博士后基金面上基金等科研项目。

特别鸣谢:本届论坛由彭桓武理论物理创新研究中心支持。

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