On the calculation of hadron form factors from Euclidean Dyson-Schwinger equations

Details On the calculation of hadron form factors from Euclidean Dyson-Schwinger equations On the calculation of hadron form factors from Euclidean Dyson-Schwinger equations

1996-11-06

arxiv.org/abs/hep-ph/9611256v1

Phys.Rev.Lett. 78 (1997) 3059-3062

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 3 postscript figures

Scientific paper

10.1103/PhysRevLett.78.3059

We apply Euclidean time methods to phenomenological Dyson-Schwinger models of hadrons. By performing a Fourier transform of the momentum space correlation function to Euclidean time and by taking the large Euclidean time limit, we project onto the lightest on-mass-shell hadron for given quantum numbers. The procedure, which actually resembles lattice gauge theory methods, allows the extraction of moments of structure functions, moments of light-cone wave functions and form factors without `ad hoc' extrapolations to the on-mass-shell points. We demonstrate the practicality of the procedure with the example of the pion form factor.

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