G(KN-LAMBDA) AND G(KN-SIGMA) FROM QCD SUM-RULES

Authors
CHOE S CHEOUN MK LEE SH
Citation
S. Choe et al., G(KN-LAMBDA) AND G(KN-SIGMA) FROM QCD SUM-RULES, Physical review. C. Nuclear physics, 53(3), 1996, pp. 1363-1367
Citations number
23
Categorie Soggetti
Physics, Nuclear
Journal title
Physical review. C. Nuclear physics → ACNP
ISSN journal
05562813
Volume
53
Issue
3
Year of publication
1996
Pages
1363 - 1367
Database
ISI
SICI code
0556-2813(1996)53:3<1363:GAGFQS>2.0.ZU;2-M
Abstract
g(KN Lambda) and g(KN Sigma) are calculated using a QCD sum rule motiv ated method used by Reinders, Rubinstein, and Yazaki to extract hadron couplings to Goldstone bosons. The SU(3) symmetry breaking effects ar e taken into account by including the contributions from the strange q uark mass and assuming different values for the strange and the up-dow n quark condensates. We find g(KN Lambda)/root 4 pi=-196 and g(KN Sigm a)/4 pi=0.33.