Non-relativistic contributions in order $\alpha^5m_\mu c^2$ to the Lamb shift in muonic hydrogen, deuterium and helium ion

Understand

Contributions to the energy levels in light muonic atoms and, in particular, to the Lamb shift fall into a few well-distinguished classes.

• The related diagrams are calculated using different approaches.
• In particular, there is a specific kind of non-relativistic contributions.
• Here we consider such corrections to the Lamb shift in order $\alpha^5m_\mu$.