# Symmetry and symmetry breaking in particle physics

- Institution: CERN
- Department: CERN Academic Training Lecture,274
- Taught by: Andrew G Cohen, Andrew Cohen
- Year: 1993
- Level: Graduate
- Language: English
- Subjects: Physics
- Source: [CERN](https://videos.cern.ch/record/3023808)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

We will discuss how the constraints on symmetries can be implemented in the calculation of particle properties. Using the notion of "effective field theories" we will show how symmetry can be used to parameterize in interactions of even very complicated systems in relatively simple ways. For examples we will discuss the pions and kaons of QCD and radiative corrections in the weak interactions. Topics to be covered: Symmetries and constraints on interactions - Low energy effective interactions - Mesons and chiral symmetry breaking - Weak interactions and radiative corrections.

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## Lectures

1. [Symmetry and symmetry breaking in particle physics](https://invisiblenetwork.ai/learn/cern/3023808/0177a9e26853), 1 h (CERN's player)