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Hadronic coupling constants in lattice QCD |
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| Authors: | R L Altmeyer M Göckeler R Horsley E Laermann G Schierholz P M Zerwas |
| Institution: | 1. Deutsches Elektronen-Synchrotron DESY, D-22603, Hamburg, Germany 2. Gruppe Theorie der Elementarteilchen, H?chstleistungsrechenzentrum HLRZ, c/o Forschungszentrum Jülich, D-52425, Jülich, Germany 3. Fakult?t für Physik, Universit?t Bielefeld, D-33501, Bielefeld, Germany |
| Abstract: | We calculate the hadronic coupling constantsg
NN
andg
 in QCD, including dynamical quarks in the framework of staggered fermions in the lattice approach. For the nucleon-pion coupling we obtaing
NN
=13.8±5.8, to be compared with the experimental value 13.13±0.07 1]. The coupling has been analysed for two different sets of operators with the averaged resultg
=4.2±1.9 which is to be compared with the experimental value 6.06±0.01 2]. |
| Keywords: | |
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