The K*K pi and rho pi pi couplings in QCD

Authors
Zhu, SL
Citation
Sl. Zhu, The K*K pi and rho pi pi couplings in QCD, EUR PHY J A, 4(3), 1999, pp. 277-281
Citations number
25
Categorie Soggetti
Physics
Journal title
EUROPEAN PHYSICAL JOURNAL A
ISSN journal
14346001 → ACNP
Volume
4
Issue
3
Year of publication
1999
Pages
277 - 281
Database
ISI
SICI code
1434-6001(199903)4:3<277:TKPARP>2.0.ZU;2-0
Abstract
The light cone QCD sum rules are derived for the K*K pi coupling gK*K pi an d the rho pi pi coupling g rho pi pi. The contribution from the excited sta tes and the continuum is subtracted cleanly through the double Borel transf orm with respect to the two external momenta, p(1)(2) p(2)(2) = (p-q)(2). O ur result gK*K pi = (8.7 +/- 0.5) and g(rho pi pi) = (11.5 +/- 0.8) is in g ood agreement with the experimental value.