HADRONIC COUPLING-CONSTANTS IN LATTICE QCD

Authors
ALTMEYER RL GOCKELER M HORSLEY R LAERMANN E SCHIERHOLZ G ZERWAS PM
Citation
Rl. Altmeyer et al., HADRONIC COUPLING-CONSTANTS IN LATTICE QCD, Zeitschrift fur Physik. C, Particles and fields, 68(3), 1995, pp. 443-449
Citations number
12
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
68
Issue
3
Year of publication
1995
Pages
443 - 449
Database
ISI
SICI code
0170-9739(1995)68:3<443:HCILQ>2.0.ZU;2-P
Abstract
We calculate the hadronic coupling constants g(NN pi) and g(p pi pi) i n QCD, including dynamical quarks in the framework of staggered fermio ns in the lattice approach. For the nucleon-pion coupling we obtain g( NN pi) = 13.8 +/- 5.8, to be compared with the experimental value 13.1 3 +/- 0.07 [1]. The rho pi pi coupling has been analysed for two diffe rent sets of operators with the averaged result g(p pi pi) = 4.2 +/- 1 .9 which is to be compared with the experimental value 6.06 +/- 0.01 [ 2].