Novel and Self-Consistency Analysis of the QCD Running Coupling α_(s)(Q) in Both the Perturbative and Nonperturbative Domains  

作　　者：Qing Yu Hua Zhou Xu-Dong Huang Jian-Ming Shen Xing-Gang Wu 余青;周华;黄旭东;申建明;吴兴刚(Department of Physics,Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 401331,China;Department of Physics,Norwegian University of Science and Technology,Høgskoleringen 5,N-7491 Trondheim,Norway;School of Physics and Electronics,Hunan University,Changsha 410082,China)

机构地区：[1]Department of Physics,Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 401331,China [2]Department of Physics,Norwegian University of Science and Technology,Høgskoleringen 5,N-7491 Trondheim,Norway [3]School of Physics and Electronics,Hunan University,Changsha 410082,China

出　　处：《Chinese Physics Letters》2022年第7期30-35,共6页中国物理快报（英文版）

基　　金：supported in part by the Chongqing Graduate Research and Innovation Foundation (Grant Nos. CYB21045 and ydstd1912);the National Natural Science Foundation of China (Grant Nos. 11905056, 12175025, and 12147102);the Fundamental Research Funds for the Central Universities (Grant No. 2020CQJQYZ003)。

摘　　要：The quantum chromodynamics(QCD) coupling αs is the most important parameter for achieving precise QCD predictions. By using the well measured effective coupling α_(s)^(g)1)(Q) defined from the Bjorken sum rules as a basis, we suggest a novel self-consistency way to fix the αs at all scales: The QCD light-front holographic model is adopted for its infrared behavior, and the fixed-order p QCD prediction under the principle of maximum conformality(PMC) is used for its high-energy behavior. Using the PMC scheme-and-scale independent perturbative series,and by transforming it into the one under the physical V scheme, we observe that a precise αs running behavior in both the perturbative and nonperturbative domains with a smooth transition from small to large scales can be achieved.

关 键 词：PAA PMC Novel and Self-Consistency Analysis of the QCD Running Coupling in Both the Perturbative and Nonperturbative Domains QCD 

分 类 号：O572.243[理学—粒子物理与原子核物理]