# $η$ and $η-$ decays and what can we learn from them

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In this talk a short overview of $\eta$ and $\eta-$ decays is given with an emphasis on what can be learned for the strong interaction from them. The talk consists of a short introduction to ChPT, a discussion of $\eta\to3\pi$ beyond $p^4$ and some of the physics involved in $\eta-\to\eta\pi\pi,3\pi$ as well as an overview of anomalous processes.

Author: Johan Bijnens

Source: https://archive.org/