Intrinsic quadrupole moment of the nucleon

2000/12/08 by A. J. Buchmann, Ernest M. Henley, E. M. Henley · 1 voice · 7 citations
Physics and Astronomy · #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevc.63.015202

published as Phys.Rev. C63 (2001) 015202 · 17 pages, 5 figures

openalex publication_date 2000/12/08 · arxiv created 2001/01/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We address the question of the intrinsic quadrupole moment Q₀ of the nucleon in various models. All models give a positive intrinsic quadrupole moment for the proton. This corresponds to a prolate deformation. We also calculate the intrinsic quadrupole moment of the Delta(1232). All our models lead to a negative intrinsic quadrupole moment of the Delta corresponding to an oblate deformation.

Citations

• Elementary Quantum Field Theory

Cited by

• Global analysis of proton elastic form factor data with two-photon exchange corrections
• Recoil Polarization forΔExcitation in Pion Electroproduction
• Recoil polarization measurements for neutral pion electroproduction atQ2=1(GeV/c)2near the Δ resonance
• Electric quadrupole and magnetic octupole moments of the Δ
• Quark transverse charge densities in the from lattice QCD
• ElectromagneticN→ΔTransition and Neutron Form Factors
• Nucleon deformation and atomic spectroscopy

Discussions

• While there are amazing experimental boundaries for electric dipole moment of electron and neutron , for electric quadrupole moments I could only find for large nuclei. It seems especially interesting [stackexchange, 3 points]

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• N->Delta Quadrupole Transition in the Constituent Quark Model
• Charge form factors and nucleon shape