The 8th international conference on particle physics and astrophysics

Brief review of using exact results of axial anomaly for studying $\gamma\gamma^{(*)}$ and $\gamma Z^{0}$ processes

29 Oct 2026, 10:00

15m

Sevastopol Hotel

Oral talk High energy physics: theory High energy physics: theory

Description

In this talk an overview is presented of a method based on the use of exact axial anomaly relations for investigating transition form factors $\pi^0,\eta,\eta'\rightarrow\gamma\gamma^{(*)}$ in the both space- and time-like regions. This method allows to examine the nonperturbative gluon matrix element $\langle 0 |G\tilde{G}|\gamma\gamma^{(*)} \rangle$ and obtain and describe main features of this matrix element. This method can be applied to study another processes, like $\pi^{0},\eta\rightarrow \nu \bar{\nu} \gamma$ Dalitz decays.