On Nucleon Magnetic Moments
نویسندگان
چکیده
منابع مشابه
Pion Mass Dependence of Nucleon Magnetic Moments
The relevance of the pion mass, provenient from a term which explicitely breaks chiral symmetry in the Lagrangian, for nucleon magnetic moment in the frame work of the Skyrme model in two different versions: the usual one model and a modified one which includes a coupling to a light scalar meson field, the sigma σ(' 500 − 600 MeV). Results are compared to other calculations. Our main motivation...
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Electromagnetic properties of the nucleon are explored with lattice QCD using a novel technique. Focusing on background electric fields, we show how the electric polarizability can be extracted from nucleon correlation functions. A crucial step concerns addressing contributions from the magnetic moment, which affects the relativistic propagation of nucleons in electric fields. By properly handi...
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The Goldberger-Treiman relation M = 2π/ √ 3 f cl π where M is the constituent quark mass in the chiral limit (cl) and f cl π the pion decay constant in the chiral limit predicts constituent quark masses ofmu = 328.8±1.1MeV andmd = 332.3±1.1MeV for the up and down quark, respectively, when f cl π = 89.8± 0.3 MeV is adopted. Treating the constituent quarks as bare Dirac particles the following ze...
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A calculation of the current-quark-mass-dependence of nucleon static electromagnetic properties is necessary in order to use observational data as a means to place constraints on the variation of Nature’s fundamental parameters. A Poincaré covariant Faddeev equation, which describes baryons as composites of confined-quarks and -nonpointlike-diquarks, is used to calculate this dependence. The re...
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We present results for the nucleon magnetic moments in the context of an extended chiral constituent quark model based on the mechanism of the Goldstone boson exchange, as suggested by the spontaneous breaking of chiral symmetry in QCD. The electromagnetic charge-current operator is consistently deduced from the model Hamiltonian, which includes all force components for the pseudoscalar, vector...
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ژورنال
عنوان ژورنال: Australian Journal of Physics
سال: 1963
ISSN: 0004-9506
DOI: 10.1071/ph630108