The eta NN coupling constant - art. no. 065205

Authors
Zhu, SL
Citation
Sl. Zhu, The eta NN coupling constant - art. no. 065205, PHYS REV C, 6106(6), 2000, pp. 5205
Citations number
20
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C-NUCLEAR PHYSICS
ISSN journal
05562813 → ACNP
Volume
6106
Issue
6
Year of publication
2000
Database
ISI
SICI code
0556-2813(200006)6106:6<5205:TENCC->2.0.ZU;2-5
Abstract
We derive the light cone QCD sum rule for the eta NN coupling constant g (e ta NN). The contribution from the excited states and the continuum is subtr acted cleanly through the double Borel transform with respect to the two ex ternal momenta. p(1)(2),p(2)(2) = (p - q)(2). Our result is alpha (eta NN) = (0.3+/-0.15), which favors small values used in the literature.