Transition form factors of pseudoscalar mesons and the contribution of gluon anomaly
Seminars
The Bogoliubov Laboratory of Theoretical Physics
Joint Laboratory Seminar
Date and Time: Friday, 30 November 2018, at 11:00 AM
Venue: Blokhintsev Hall (4th floor), Bogoliubov Laboratory of Theoretical Physics
Seminar topic: “Transition form factors of pseudoscalar mesons and the contribution of gluon anomaly”
Authors: S.P. Khlebtsov1, Ya. Klopot2, A. Oganessian1,2, O. Teryaev2
1 – NRC «Kurchatov Institute» – ITEP
2 – BLTP JINR
Speaker: S.P. Khlebtsov
Abstract:
In the framework of the anomaly sum rules approach, based on the dispersion representation of the axial anomaly and the global quark-hadron duality hypothesis, expressions of Transition Form Factors(TFF) for the pseudoscalar mesons are derived. The obtained solutions are taking into account the mixing of π0,η,η’ and the contribution of the gluon anomaly. It it shown that with this approach it is possible to describe TFF for space-like and time-like photon virtualities. The contribution of the gluon anomaly is estimated.