强子物理在线论坛 Hadron Physics Online Forum (HAPOF)
第八十四期HAPOF论坛，Solving the left-hand cut problem in lattice QCD: 𝑻_𝒄𝒄^+ (𝟑𝟖𝟕𝟓) from finite volume energy levels，孟璐 博士
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Asia/Shanghai
Description
报告人：孟璐 博士 (Ruhr-Universität Bochum) 报告时间：2023年12月15日 15：00 - 17：00 (Beijing time) 会议链接：点击链接 腾讯会议室ID: 984-398-774 摘要： In this talk, I will present a novel effective-field-theory-based approach for extracting two-body scattering information from finite volume energies. Its main advantage as compared to the Lüscher method consists in the explicit account for the longest-range interaction including the leading left-hand cut (lhc), which is crucial for maintaining the analytic structure of the scattering amplitude. Using this method, the finite-volume energy levels both below and above the lhc can be directly calculated. The method utilizes the plane wave basis instead of the conventional partial wave expansion, thereby also naturally including partial wave mixing effects resulting from rotational symmetry breaking in a cubic box. Applied to the lattice data for DD^∗scattering at a pion mass of 280 MeV, it reveals the significant impact of the one-pion exchange on P-wave and S-wave phase shifts. The pole position of the T_cc^+ (3875) state, extracted from the lattice data, appears to be consistent with a near-threshold resonance. 报告人简介： 孟璐， Ruhr-Universität Bochum博士后，合作导师为Evgeny Epelbaum教授。2015年本科毕业于山东大学泰山 学堂；2020年博士毕业于北京大学物理学院，导师为朱世琳教授，曾获“北京大学优秀博士论文”奖。目前的研究兴趣主 要为：有限体积效应，强子奇特态，手征有效场论和夸克模型，在Physics Reports, Science Bulletin, JHEP, Physical Review D等期刊发表SCI论文35篇，引用1200余次，h因子为20。 特别鸣谢：本届论坛由国家自然科学基金委创新群体“强子物理研究”（国科大）资金支持
