Mapping Spatial Distributions within Pseudoscalar Mesons  

作　　者：Khepani Raya Adnan Bashir Jose Rodriguez-Quintero 

机构地区：[1]Department of Integrated Sciences and Center for Advanced Studies in Physics,Mathematics and Computation,University of Huelva,E-21071 Huelva,Spain [2]Instituto de Fisica y Matematicas,Universidad Michoacana de San Nicolas de Hidalgo,Morelia,Michoacan 58040,Mexico [3]Irfu,CEA,Universit´e de Paris-Saclay,91191,Gif-sur-Yvette,France

出　　处：《Chinese Physics Letters》2025年第2期1-12,共12页中国物理快报(英文版)

基　　金：supported by the Spanish MICINN grant PID2022-140440NB-C22;the regional Andalusian project P18-FR-5057;the Coordinación de la Investigación Científica of the Universidad Michoacana de San Nicolás de Hidalgo,Morelia,Mexico,Grant No.4.10;the Consejo Nacional de Humanidades,Ciencias y Tecnologías,Mexico,project CBF2023-2024-3544;the Beatriz-Galindo support during his current scientific stay at the University of Huelva,Huelva,Spain;the Chair d'excellence within the program d'Alembert supporting a visiting professorship in the Universitéde Paris-Saclay,France。

摘　　要：Several aspects of the internal structure of pseudoscalar mesons,accessible through generalized parton distri-butions in their zero-skewness limit,are examined.These include electromagnetic and gravitational form factors related to charge and mass densities;and distributions in the impact parameter space.To this end,we employ an algebraically viable framework that is based upon the valence-quark generalized parton distribution expressed explicitly in terms of the associated distribution function and a profile function that governs the off-forward dynamics.The predominantly analytical nature of this scheme yields several algebraic results and relations while also facilitating the exploration of insightful limiting cases.With a suitable input distribution function,guided either by experiment or theory,and with an appropriate choice of the profile function,it is possible to provide testable predictions for spatial distributions of valence quarks inside pseudoscalar mesons.When comparison is possible,these predictions align well with existing experimental data as well as the findings of reliable theoretical approaches and lattice QCD.

关 键 词：DYNAMICS SCALAR ALGEBRAIC 

分 类 号：O572.33[理学—粒子物理与原子核物理]