報 告 人：程山，副教授，湖南大學
主 持 人：劉朝峰，研究員，中科院高能所
報告時間：2023年6月14日（周三），下午15:00
報告地點：高能所圖書館樓319會議室
報告摘要：
As the lightest and simplest hadron composited by valence quarks, pion meson and the involved channels are usually treated as the benchmarks of measurements, which requires the theoretical calculations based on the knowledge of its inner structure to achieve at a high accuracy. How precise do we know the pion meson light-cone distribution amplitudes (LCDAs) ? In this talk I will firstly review the current status of pion LCDAs, particularly for the gegenbauer expansion coefficients a_n^π. Secondly, I will report our recent study of the first few coefficients and the chiral mass by the data-driven dispersion relation with the electromagnetic form factor. Followed I will furtherly go to the LCDAs of dipion system where the double expansion coefficients B_nl^I would be discussed. I would like to conclude the talk with the phenomena in heavy flavor decays.
個人簡介:
程山，湖南大學副教授，岳麓學者。2015年在南京師范大學獲得理學博士學位，隨后在德國錫根大學從事博士后研究，2018年入職湖南大學，歷任助理教授、副教授。致力于在味物理領域中開展標準模型精確檢驗的研究，目前的研究興趣集中在CP破壞、重夸克弱衰變唯象學和輕強子（系統(tǒng)）內(nèi)部結(jié)構(gòu)的描述。
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