CHIRAL-LOOP AND VECTOR-MESON CONTRIBUTIONS TO ETA-]PI-PI-GAMMA-GAMMA DECAYS

Authors
AMETLLER L BIJNENS J BRAMON A TALAVERA P
Citation
L. Ametller et al., CHIRAL-LOOP AND VECTOR-MESON CONTRIBUTIONS TO ETA-]PI-PI-GAMMA-GAMMA DECAYS, Physics letters. Section B, 400(3-4), 1997, pp. 370-378
Citations number
28
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
400
Issue
3-4
Year of publication
1997
Pages
370 - 378
Database
ISI
SICI code
0370-2693(1997)400:3-4<370:CAVCTE>2.0.ZU;2-6
Abstract
The process eta --> pi(0) pi(0) gamma gamma is discussed in Chiral Per turbation Theory (ChPT). Special attention is devoted to one-loop corr ections, eta-eta' mixing effects and vector-meson dominance of ChPT co unter-terms. The less interesting eta --> pi(+)pi(-)gamma gamma transi tion is briefly discussed too. (C) 1997 Elsevier Science B.V.