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From QCD-based descriptions to direct fits: a unified study of nucleon electromagnetic form factors.

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Title: From QCD-based descriptions to direct fits: a unified study of nucleon electromagnetic form factors.
Authors: Vaziri, Hossein1 (AUTHOR) Hossein.Vaziri@shahroodut.ac.ir, Shojaei, Mohammad Reza1 (AUTHOR) Shojaei.ph@gmail.com, Masjuan, Pere2 (AUTHOR) masjuan@ifae.es
Source: European Physical Journal: Special Topics. Jul2026, Vol. 235 Issue 9, p2093-2109. 17p.
Subject Terms: *Padé approximant, *Vector mesons, *Neutrons, *Quantum chromodynamics
Abstract: We present a detailed study of the nucleon electromagnetic form factors in the space-like region by combining three complementary approaches: two GPD-based contributions and a vector-meson exchange component. By fitting experimental data, we extract the optimal weights and shape parameters describing the proton and neutron form factors. Global Padé-based fits are then constructed for four distinct groups of form factors, starting from local Taylor expansions and yielding stable analytic parametrizations over the analyzed t range. The combined framework provides an accurate and physically motivated description of nucleon structure within a controlled model-dependent setting across a wide range of momentum transfers. [ABSTRACT FROM AUTHOR]
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  – Url: https://dx.doi.org/doi:10.1140/epjs/s11734-026-02193-2
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  – Url: https://resolver.ebsco.com/c/fiv2js/result?sid=EBSCO:asx&genre=article&issn=19516355&ISBN=&volume=235&issue=9&date=20260701&spage=2093&pages=2093-2109&title=European Physical Journal: Special Topics&atitle=From%20QCD-based%20descriptions%20to%20direct%20fits%3A%20a%20unified%20study%20of%20nucleon%20electromagnetic%20form%20factors.&aulast=Vaziri%2C%20Hossein&id=DOI:10.1140/epjs/s11734-026-02193-2
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  Group: Ti
  Data: From QCD-based descriptions to direct fits: a unified study of nucleon electromagnetic form factors.
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  Data: <searchLink fieldCode="AR" term="%22Vaziri%2C+Hossein%22">Vaziri, Hossein</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Hossein.Vaziri@shahroodut.ac.ir</i><br /><searchLink fieldCode="AR" term="%22Shojaei%2C+Mohammad+Reza%22">Shojaei, Mohammad Reza</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> Shojaei.ph@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Masjuan%2C+Pere%22">Masjuan, Pere</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> masjuan@ifae.es</i>
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  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal%3A+Special+Topics%22">European Physical Journal: Special Topics</searchLink>. Jul2026, Vol. 235 Issue 9, p2093-2109. 17p.
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  Data: *<searchLink fieldCode="DE" term="%22Padé+approximant%22">Padé approximant</searchLink><br />*<searchLink fieldCode="DE" term="%22Vector+mesons%22">Vector mesons</searchLink><br />*<searchLink fieldCode="DE" term="%22Neutrons%22">Neutrons</searchLink><br />*<searchLink fieldCode="DE" term="%22Quantum+chromodynamics%22">Quantum chromodynamics</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We present a detailed study of the nucleon electromagnetic form factors in the space-like region by combining three complementary approaches: two GPD-based contributions and a vector-meson exchange component. By fitting experimental data, we extract the optimal weights and shape parameters describing the proton and neutron form factors. Global Padé-based fits are then constructed for four distinct groups of form factors, starting from local Taylor expansions and yielding stable analytic parametrizations over the analyzed t range. The combined framework provides an accurate and physically motivated description of nucleon structure within a controlled model-dependent setting across a wide range of momentum transfers. [ABSTRACT FROM AUTHOR]
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        Value: 10.1140/epjs/s11734-026-02193-2
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      – Code: eng
        Text: English
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      – SubjectFull: Vector mesons
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      – SubjectFull: Neutrons
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      – SubjectFull: Quantum chromodynamics
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      – TitleFull: From QCD-based descriptions to direct fits: a unified study of nucleon electromagnetic form factors.
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            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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