Revealing pion and kaon structure via generalised parton distributions  

作　　者：K.Raya Z-F.Cui L.Chang J.M.Morgado C.D.Roberts J.Rodríguez-Quintero K.Raya;崔著钫;常雷;J.M.Morgado;C.D.Roberts;J.Rodríguez-Quintero(School of Physics,Nankai University,Tianjin 300071,China;Departamento de Física Teórica y del Cosmos,Universidad de Granada,E-18071,Granada,Spain;Instituto de Ciencias Nucleares,Universidad Nacional Autónoma de México,Apartado Postal 70-543,CDMX 04510,México;School of Physics,Nanjing University,Nanjing,Jiangsu 210093,China;Institute for Nonperturbative Physics,Nanjing University,Nanjing,Jiangsu 210093,China;Department of Integrated Sciences and Center for Advanced Studies in Physics,Mathematics and Computation,University of Huelva,E-21071 Huelva,Spain)

机构地区：[1]School of Physics,Nankai University,Tianjin 300071,China [2]Departamento de Física Teórica y del Cosmos,Universidad de Granada,E-18071,Granada,Spain [3]Instituto de Ciencias Nucleares,Universidad Nacional Autónoma de México,Apartado Postal 70-543,CDMX 04510,México [4]School of Physics,Nanjing University,Nanjing,Jiangsu 210093,China [5]Institute for Nonperturbative Physics,Nanjing University,Nanjing,Jiangsu 210093,China [6]Department of Integrated Sciences and Center for Advanced Studies in Physics,Mathematics and Computation,University of Huelva,E-21071 Huelva,Spain

出　　处：《Chinese Physics C》2022年第1期80-101,共22页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(12135007,11805097);Jiangsu Provincial Natural Science Foundation of China(BK20180323);Spanish Ministry of Science and Innovation(MICINN)(PID2019-107844GB-C22);Junta de Andalucía(P18-FR-5057,UHU-1264517);University of Huelva(EPIT-2019)。

摘　　要：Clear windows onto emergent hadron mass(EHM)and modulations thereof by Higgs boson interactions are provided by observable measures of pion and kaon structure,many of which are accessible via generalised parton distributions(GPDs).Beginning with algebraic GPD Ansätze,constrained entirely by hadron-scaleπand K valence-parton distribution functions(DFs),in whose forms both EHM and Higgs boson influences are manifest,numerous illustrations are provided.They include the properties of electromagnetic form factors,impact parameter space GPDs,gravitational form factors and associated pressure profiles,and the character and consequences of allorders evolution.The analyses predict that mass-squared gravitational form factors are stiffer than electromagnetic form factors;reveal that K pressure profiles are tighter than profiles,with both mesons sustaining near-core pressures at magnitudes similar to that expected at the core of neutron stars;deliver parameter-free predictions for and K valence,glue,and sea GPDs at the resolving scale l=2GeV;and predict that at this scale the fraction of meson mass-squared carried by glue and sea combined matches that lodged with the valence degrees-of-freedom,with a similar statement holding for mass-squared radii.

关 键 词：continuum Schwinger function methods emergence of hadron mass Nambu-Goldstone modes-pions and kaons nonperturbative quantum field theory parton distributions strong interactions 

分 类 号：O572.33[理学—粒子物理与原子核物理]