Authors
Citation
Sd. Bass, Gluons and the eta '-nucleon coupling constant, PHYS LETT B, 463(2-4), 1999, pp. 286-292
Citations number
36
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693
→ ACNP
Volume
463
Issue
2-4
Year of publication
1999
Pages
286 - 292
Database
ISI
SICI code
0370-2693(19990930)463:2-4<286:GATE'C>2.0.ZU;2-M
Abstract
We derive the effective chiral Lagrangian for low-energy eta-nucleon and et
a'-nucleon interactions and show that gluonic degrees of freedom, via the a
xial U-A(1) anomaly, induce a contact term in the pp --> pp eta and pp -->
pp eta' reactions. We then discuss the consequences for the extraction of g
(eta'NN) from experimental data. (C) 1999 Elsevier Science B.V. All rights
reserved.