STRONG COUPLINGS FROM QCD SUM-RULES

Authors
NASRALLAH NF
Citation
Nf. Nasrallah, STRONG COUPLINGS FROM QCD SUM-RULES, Physics letters. Section B, 384(1-4), 1996, pp. 263-268
Citations number
16
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
384
Issue
1-4
Year of publication
1996
Pages
263 - 268
Database
ISI
SICI code
0370-2693(1996)384:1-4<263:SCFQS>2.0.ZU;2-1
Abstract
Use of QCD sum rules yields a new compact expression for the rho-pi-pi coupling constant G rho pi pi=1/2 pi root e/2m(rho)(2)/f(pi)(2)(1-del ta), where delta is due to power and continuum corrections. Improved e xpressions for G(pi N) and G(eta N) which appeared some time ago in th e literature are also obtained. Agreement with experiment is good.