International Physics Masterclasses

The following picture gallery contains all information about Feynman diagrams that are necessary to understand the explanations on the following pages. These information are given by using a popular particle at least for physicists that is nevertheless unknown to most human beings although its representatives fly through our own bodies regularly: the muon. Approximately one muon flies every minute through an area of the size of a finger nail at sea level. (How many muons cross your body within a year?)

We will use them as pictures that illustrates the sequence of an interaction between particles (collisions, scattering, decays) in space-time-diagrams.

As a matter of fact, Feynman diagrams (named after Richard Feynman) are figurative depictions of contributions from interactions between particles, which are described by quantum field theory. By using these pictures, complicated processes are illustrated and their appearance probabilities can be more easily calculated.

Here you get back to the Z boson website