Pion and kaon electromagnetic and gravitational form factors

被引：25

作者：

Xu, Y. Z. ^{[1
,2
]}

Ding, M. ^{[3
]}

Raya, K. ^{[1
]}

Roberts, C. D. ^{[4
,5
]}

Rodriguez-Quintero, J. ^{[1
]}

Schmidt, S. M. ^{[3
,6
]}

机构：

[1] Univ Huelva, Fac Ciencias Expt, Ctr Estudios Avanzados en Fis Mat & Comp, Dept Ciencias Integradas, Huelva 21071, Spain

[2] Univ Pablo Olavide, Dept Sistemas Fis Quim & Nat, Seville 41013, Spain

[3] Helmholtz Zentrum Dresden Rossendorf, Bautzner Landstr 400, D-01328 Dresden, Germany

[4] Nanjing Univ, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China

[5] Nanjing Univ, Inst Nonperturbat Phys, Nanjing 210093, Jiangsu, Peoples R China

[6] Rhein Westfal TH Aachen, III Phys Inst B, D-52074 Aachen, Germany

来源：

EUROPEAN PHYSICAL JOURNAL C | 2024年 / 84卷 / 02期

基金：

中国国家自然科学基金;

关键词：

GENERALIZED PARTON DISTRIBUTIONS; SYMMETRY-BREAKING; SCHWINGER-DYSON; WARD IDENTITY; AMPLITUDES; EQUATIONS; THEOREM; VERTEX;

D O I：

10.1140/epjc/s10052-024-12518-x

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A unified set of predictions for pion and kaon elastic electromagnetic and gravitational form factors is obtained using a symmetry-preserving truncation of each relevant quantum field equation. A key part of the study is a description of salient aspects of the dressed graviton + quark vertices. The calculations reveal that each meson's mass radius is smaller than its charge radius, matching available empirical inferences; and meson core pressures are commensurate with those in neutron stars. The analysis described herein paves the way for a direct calculation of nucleon gravitational form factors.

引用

页数：13

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