Electromagnetic nucleon form factors in instant and point form

Journal Article · Mon Oct 01 00:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.074020· OSTI ID:21032347

Melde, T; Berger, K; Plessas, W; Wagenbrunn, R F ^[1]; Canton, L ^[2]

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1. Theoretische Physik, Institut fuer Physik, Karl-Franzens-Universitaet Graz, Universitaetsplatz 5, A-8010 Graz (Austria)
2. Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Via F. Marzolo 8, I-35131 Padova (Italy)

We present a study of the electromagnetic structure of the nucleons with constituent quark models in the framework of relativistic quantum mechanics. In particular, we address the construction of spectator-model currents in the instant and point forms. Corresponding results for the elastic nucleon electromagnetic form factors as well as charge radii and magnetic moments are presented. We also compare results obtained by different realistic nucleon wave functions stemming from alternative constituent quark models. Finally, we discuss the theoretical uncertainties that reside in the construction of spectator-model transition operators.

• OSTI ID: 21032347
• Journal Information: Physical Review. D, Particles Fields, Vol. 76, Issue 7; Other Information: DOI: 10.1103/PhysRevD.76.074020; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
ELECTROMAGNETIC FORM FACTORS
FIELD OPERATORS
MAGNETIC MOMENTS
NUCLEONS
PARTICLE RADII
PARTICLE STRUCTURE
QUANTUM MECHANICS
QUARK MODEL
RELATIVISTIC RANGE
WAVE FUNCTIONS