Proton decay
Concept
A predicted phenomenon in some theories of force unification, which the DUNE experiment aims to detect.
Mentioned in 2 videos
Videos Mentioning Proton decay

The unseen universe: Challenges for theory and experiment – Public lecture by Dr. Marcela Carena
Fermilab
A predicted phenomenon in some theories of force unification, which the DUNE experiment aims to detect.

What's Going Wrong in Particle Physics? (This is why I lost faith in science.)
Sabine Hossenfelder
A predicted phenomenon where a proton spontaneously transforms into lighter particles. Experiments since the 1980s have looked for proton decay, which is a prediction of some Grand Unified Theories, but have not found evidence for it.