Academic Journal
From QCD-based descriptions to direct fits: a unified study of nucleon electromagnetic form factors.
| Τίτλος: | From QCD-based descriptions to direct fits: a unified study of nucleon electromagnetic form factors. |
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| Συγγραφείς: | Vaziri, Hossein1 (AUTHOR) Hossein.Vaziri@shahroodut.ac.ir, Shojaei, Mohammad Reza1 (AUTHOR) Shojaei.ph@gmail.com, Masjuan, Pere2 (AUTHOR) masjuan@ifae.es |
| Πηγή: | European Physical Journal: Special Topics. Jul2026, Vol. 235 Issue 9, p2093-2109. 17p. |
| Θεματικοί όροι: | *Padé approximant, *Vector mesons, *Neutrons, *Quantum chromodynamics |
| Περίληψη: | 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] |
| Βάση Δεδομένων: | Academic Search Index |
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