高能散射强相互作用唯象学研究进展  

Recent progress on strong interaction phenomenology in high energy scatterings

作　　者：王健 司宗国[1] 刘言锐 李世渊[1] 吴群 金毅[1,2] 姚涛 蒋军 Jian Wang;Zong-Guo Si;Yan-Rui Liu;Shi-Yuan Li;Qun Wu;Yi Jin;Tao Yao;Jun Jiang(School of Physics,Shandong University,Jinan 250100,China;School of Physicsand Technology,University of Jinan,Jinan 250022,China)

机构地区：[1]山东大学物理学院,济南250100 [2]济南大学物理科学与技术学院,济南250022

出　　处：《科学通报》2021年第16期1957-1967,共11页Chinese Science Bulletin

基　　金：国家自然科学基金(11635009,11775130,11775132,11875179,11905112,12005117);山东省自然科学基金(ZR2018MA47);泰山学者经费(tsqn201909011)资助。

摘　　要：高能散射是研究物质基本结构及其相互作用规律的基本实验手段,探索新物理必然涉及的强相互作用唯象分析和精确计算尤为重要.本文围绕强子产生介绍高能散射强相互作用的最新唯象学研究进展,主要包括量子色动力学微扰计算概述、强相互作用软硬界面的预禁闭结构(色连接、重子数涨落等)、色单态预禁闭集团的强子化物理图像及重要的强子化模型(弦碎裂模型、集团碎裂模型、夸克组合模型等)、强子产生涉及的相关强子结构和强子波函数的研究与应用等.We review some of the recent progress in strong interaction phenomenology in high energy scatterings,emphasizing on the hadron production.We first introduce perturbative quantum chromodynamics,which is the basic tool to calculate the processes of hard strong interaction.Factorization,parton distribution functions and high order perturbative corrections,etc.are addressed and their applications in top physics and Higgs physics at high energy colliders are reviewed.Then the perturbative-nonperturbative interface of quantum chromodynamics is discussed.The concept of preconfinement is introduced.It is the result of the perturbative dynamics and evolution,and also is guaranteed by the nonperturbative dynamics.The quantum numbers of the colour-singlet preconfined cluster are not well determined by the perturbative dynamics.Colour connection and baryon number fluctuation have been investigated.Colour connection of preconfinement clusters is an important topic for constructing the hadronization models.At the same time,this study can shed light on the research of confinement.Similar uncertainties arise for the preconfinement clusters when considering the U(1)quantum numbers such as the baryon number.These interface problems are related with rich phenomena of hadron production,e.g.,phase space gap,special(doubly heavy)baryon production,large baryon meson ratio,etc.After the discussion on the uncertainties of preconfinement clusters,their hadronization models are introduced.String fragmentation model,cluster fragmentation model and quark combination model are reviewed.The quark combination model is specifically discussed.This includes the production rule,the combination rule(phase space correlation),the unitarity,etc.The comparison of predictions of various models on hadron momentum spectra,production rates,etc.is presented.We also introduce our work on the hadron bound state production,which can also be understood as another way to investigate the multi-quark hadrons in the combination model,inspired by the concept of colou

关 键 词：多重产生 微扰量子色动力学 预禁闭 强子化 强子波函数 

分 类 号：O572.2[理学—粒子物理与原子核物理]