Lattice nucleon electromagnetic form factors

Wilcox, Walter; Liu, Keh-Fei; Draper, Terrence; Wu, Chi-min

doi:10.1016/0920-5632(90)90278-3

Cited by 3 publications

(3 citation statements)

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“…6 for an introduction to the formalism and Ref. 7 for some preliminary results of the present investigation.…”

Section: Introductionmentioning

confidence: 99%

“…Although the behavior of Euclidean-time nucleon correlation functions on the lattice is standard material [3][4][5][6][7], we summarize their properties for future reference below.…”

Section: Correlation Functionsmentioning

confidence: 99%

“…If we simply divide these results by the experimental (average) nucleon mass, equivalent to the procedure adopted in Ref. 5, we then obtain a charge radius of .89(4)fm from the dipole fit and 1.01(7)fm from the monopole fit as compared to the estimate .65(8)fm from Ref. 5.…”

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confidence: 99%

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Chiral limit of nucleon lattice electromagnetic form factors

1992

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We calculate electric and magnetic form factors of protons and neutrons in quenched Monte Carlo lattice QCD on a 16 3 × 24 lattice at β = 6.0 using Wilson fermions. We employ a method which characterizes one of the nucleon fields as a fixed zero-momentum secondary source. Extrapolating the overall data set to the chiral limit, we find acceptable fits for either dipole or monopole forms and extract proton and neutron magnetic moments, the magnitude of which are 10 to 15% low compared to experiment. In the extrapolation of the dipole fit of the form factors, we find that the dipole to nucleon mass ratio is about 7% low compared to experiment.In addition, we obtain positive values of the neutron electric form factor, which, however, are poorly represented by a popular phenomenological form at intermediate to small κ values. A zero-momentum technique for extracting hadron magnetic moments is briefly discussed and shown to yield unrealistically small magnetic moment values.

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“…6 for an introduction to the formalism and Ref. 7 for some preliminary results of the present investigation.…”

Section: Introductionmentioning

confidence: 99%

“…Although the behavior of Euclidean-time nucleon correlation functions on the lattice is standard material [3][4][5][6][7], we summarize their properties for future reference below.…”

Section: Correlation Functionsmentioning

confidence: 99%