Coupling constant g (rho sigma gamma) as derived from QCD sum rules - art.no. 034012

Authors
Gokalp, A Yilmaz, O
Citation
A. Gokalp et O. Yilmaz, Coupling constant g (rho sigma gamma) as derived from QCD sum rules - art.no. 034012, PHYS REV D, 6403(3), 2001, pp. 4012
Citations number
18
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW D
ISSN journal
05562821 → ACNP
Volume
6403
Issue
3
Year of publication
2001
Database
ISI
SICI code
0556-2821(20010801)6403:3<4012:CCG(SG>2.0.ZU;2-M
Abstract
We employ QCD sum rules to calculate the coupling constant g(rho sigma gamm a) by studying the three-point rho sigma gamma correlation function. Our re sult is consistent with the value of this coupling constant obtained using vector meson dominance of the electromagnetic current and the experimental rho (o) photoproduction data.