Lepton-flavor violating axions at MEG II

Understand

We study the sensitivity of the existing MEG data to lepton flavor violating axion-like particles produced through $\mu^+ \to e^+ a \gamma$ and estimate the discovery potential for the upcoming MEG II experiment in this channel.

• The MEG II signal efficiency can be improved significantly if a new trigger can be implemented in a dedicated run with a reduced beam intensity.
• This search would establish the world leading measurement in this channel with only 1 month of data taking.