Work

Baryon Form Factors

Year: 2024

Type: preprint

Abstract: We review the status of baryon form factors with a special focus on the nucleon electromagnetic form factors which are known best. First, we give an introduction into the dispersive analyses and emphasize the role of unitarity and analyticity in the construction of the isoscalar and isovector spectral functions. Second, we present the state of the art in our understanding of nucleon form factors and radii including reliable uncertainty estimates from bootstrap and Bayesian methods. Third, we discuss the physics of the time-like form factors and point out further issues to be addressed in this framework. Finally, we review the status of hyperon form factors and comment on the pion cloud.

Source: arXiv (Cornell University)

DOI: 10.48550/arxiv.2412.12885

Authors: Lin, Yong-Hui, Hammer, Hans-Werner, Meißner, Ulf-G.

Institutions: University of Bonn, Technische Universität Darmstadt, GSI Helmholtz Centre for Heavy Ion Research, ExtreMe Matter Institute EMMI

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Strong, Deutsche Forschungsgemeinschaft, National Natural Science Foundation of China, Bundesministerium für Bildung und Forschung, Chinese Academy of Sciences, Ministerium für Kultur und Wissenschaft des Landes Nordrhein-Westfalen, H2020 European Research Council

Awards: Emergent Complexity from strong Interactions, G256797447, G2710527523, G3111662533, Verbundprojekt 05P2021 (ErUM-FSP T07) - Aufbau von NUSTAR bei FAIR: NUSTAR-THEORIE für FAIR Phase-0 Experimente, G347939927, G3712632836, TRR 110: Symmetrien und Strukturbildung in der Quantenchromodynamik, G4486538746, G5405396603, G6195246144, Verbundprojekt 05P2024 (ErUM-FSP T07) - Aufbau von NUSTAR bei FAIR: NUSTAR-THEORIE für FAIR Phase-0 Experimente, SFB 1245: Atomkerne: Von fundamentalen Wechselwirkungen zu Struktur und Sternen, G8216640622, G89332433, G905342561, G910877390

OpenAlex ID: W4405562507

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