Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8185712 | Nuclear Physics B - Proceedings Supplements | 2011 | 4 Pages |
Abstract
We derive the exact non-perturbative QCD sum rule for the transition form factors of η and ηⲠusing the dispersive representation of axial anomaly. This sum rule allows to express the transition form factors entirely in terms of meson decay constants. Using this sum rule several mixing schemes were analyzed and compared to recent experimental data. A good agreement with experimental data on η,ηⲠtransition form factors in the range from real to highly virtual photons was obtained.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Yaroslav Klopot, Armen Oganesian, Oleg Teryaev,