Lasers are powerful electric field pulses.When electrons receive a pulse of an electric field for a long time, the voltage rises and changes to muons and mesons.Isn't the meson generated after the laser irradiation started?
A powerful laser may turn electrons into mesons. But I don't have experimental equipment. I think fossilization is an example if we want to generate mesons in natural phenomena. Fossilization is a nuclear transmutation that occurs in living organisms. It was the planetary discharge that caused the transmutation. Electrical Universe indicates that planetary discharges have been in the past.