{"title":"Holographic analysis of the pion","authors":"Jeffrey Forshaw, Ruben Sandapen","doi":"10.1103/physrevd.111.034024","DOIUrl":null,"url":null,"abstract":"Inspired by light-front holography, we compute the pion mass, charge radius, decay constant, electromagnetic form factor and electromagnetic transition form factor. To do so, we model the longitudinal quark dynamics using potentials due to ’t Hooft and to Li and Vary. We find a longitudinal wave function that is rather more peaked about x</a:mi>∼</a:mo>1</a:mn>/</a:mo>2</a:mn></a:mrow></a:math> than in previous studies. We also explore the strong degeneracy between these two potentials and conclude by noting that one scenario that accords well with the data also maps onto an equation previously noted by Vegh that describes the dynamics of a four-segmented string in three-dimensional anti–de Sitter spacetime. <jats:supplementary-material> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> </jats:permissions> </jats:supplementary-material>","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"39 1","pages":""},"PeriodicalIF":5.3000,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review D","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevd.111.034024","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Physics and Astronomy","Score":null,"Total":0}
引用次数: 0
Abstract
Inspired by light-front holography, we compute the pion mass, charge radius, decay constant, electromagnetic form factor and electromagnetic transition form factor. To do so, we model the longitudinal quark dynamics using potentials due to ’t Hooft and to Li and Vary. We find a longitudinal wave function that is rather more peaked about x∼1/2 than in previous studies. We also explore the strong degeneracy between these two potentials and conclude by noting that one scenario that accords well with the data also maps onto an equation previously noted by Vegh that describes the dynamics of a four-segmented string in three-dimensional anti–de Sitter spacetime. Published by the American Physical Society2025
受光前全息术的启发，我们计算了介子质量、电荷半径、衰变常数、电磁形状因子和电磁跃迁形状因子。为了做到这一点，我们使用由于' t Hooft和Li和Vary的势来模拟纵向夸克动力学。我们发现纵波函数在x ~ 1/2处比以前的研究更有峰值。我们还探讨了这两个势之间的强简并性，并得出结论，注意到一个与数据非常吻合的场景也映射到Vegh先前注意到的一个方程，该方程描述了三维反德西特时空中四段弦的动力学。2025年由美国物理学会出版
期刊介绍：
Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics.
PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including:
Particle physics experiments,
Electroweak interactions,
Strong interactions,
Lattice field theories, lattice QCD,
Beyond the standard model physics,
Phenomenological aspects of field theory, general methods,
Gravity, cosmology, cosmic rays,
Astrophysics and astroparticle physics,
General relativity,
Formal aspects of field theory, field theory in curved space,
String theory, quantum gravity, gauge/gravity duality.
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