Pair annihilation of an electron and a positron occurs in a positron emission tomography (PET) scanner - Leaving Cert Physics - Question 1 - 2022

The annihilation of an electron and a positron can be represented by the equation:

$e^- + e^+ \rightarrow 2\gamma$

Here, $e^-$ denotes the electron, $e^+$ denotes the positron, and $\gamma$ represents the resulting gamma photons emitted during the annihilation process.