Professor
Supervisor of Doctorate Candidates
Supervisor of Master's Candidates
Date of Employment:2019-02-25
School/Department:School of Physics
Education Level:PhD Graduate
Business Address:物理与电子学院525
Sex:Male
Contact Information:xnxiong@csu.edu.cn
Degree:Doctoral degree
Status:Employed
Other Post:Referee of Physical Review Letters and Physical Review D
Alma Mater:Peking University
Discipline:Physics
从事高能物理、粒子物理方向研究,主要研究方向: 强子结构、格点量子色动力学、有效场论及低维场论。
INSPIRE数据库
https://inspirehep.net/authors/1258723?ui-citation-summary=true
代表研究(作者按姓名排序):
[1] Nucleon Transversity Distribution in the Continuum and Physical Mass Limit from Lattice QCD
Lattice Parton Collaboration
Phys. Rev. Lett. (2023) 131, 261901, DOI: 10.1103/PhysRevLett.131.261901
应用大动量有效理论(Large Momentum Effective field Theory, LaMET)通过格点量子色动力学(格点QCD)方法计算了横向极化质子中横向极化夸克的部分子分布函数(δq, transversity)。δq提供了核子横向自旋起源的信息,其物理诠释是横向极化的核子中,夸克自旋平行/反平行于质子自旋的光锥动量分布的不对称性。是首次同时进行了连续时空极限、大动量极限和物理π介子质量极限外推的计算。计算中采用了目前最为合理的重整化方案—混合重整化(Hybrid renormalization) 并应用重整化群重求和方案对LaMET方法失效的区域进行了系统的估计。此计算是目前对于δq最精细的格点QCD计算。
[2] Factorization Theorem Connecting the Light-Cone Distribution Amplitudes of Heavy-Flavor Mesons in QCD and Heavy-Quark Effective Theory
Saadi Ishaq, Yu Jia, Xiaonu Xiong, De-ShanYang
Phys. Rev. Lett (2020) 125, 132001, DOI: 10.1103/PhysRevLett.125.132001
ΦHQET)是描述重味介子非微扰性质的重要物理量。ΦQCD为QCD中所定义的LCDA,参与介子的高能遍举产生过程的因子化,目前知之甚少。而ΦHQET将Β介子硬产生过程中的三个重要能标系统地对大对数项(ln(μ/mb))求和,并利用Β介子衰变过程中被广为研究的重夸克有效理论光锥分布振幅作为输入参数,大幅提高理论预言的精度。对精确预言重味介子高能遍举产生过程、检验标准模型CKM机制(夸克混合)以及在B
[3] Solving the Bars-Green equation for moving mesons in two-dimensional QCD
Yu Jia, Shuangran Liang, LiuJi Li, Xiaonu Xiong
JHEP 1711 (2017) 151, 007/JHEP11(2017)151 DOI: 10.1007/JHEP11(2017)151
[4] One-loop matching for parton distributions: Nonsinglet case
Xiaonu Xiong, Xiangdong Ji, Jian-Hui Zhang, Yong Zhao
Phys.Rev. D90 (2014) no.1, 014051, DOI: 10.1103/PhysRevD.90.014051
[5] Proton Spin Structure from Measurable Parton Distributions
Xiangdong Ji, Xiaonu Xiong, Feng Yuan
Phys.Rev.Lett. 109 (2012) 152005, DOI: 10.1103/PhysRevLett.109.152005
[6] The quark orbital angular momentum from Wigner distributions and light-cone wave functions
Cedric Lorce, Barbara Pasquini, Xiaonu Xiong, Feng Yuan,
Phys.Rev. D85 (2012) 114006, DOI: 10.1103/PhysRevD.85.114006