https://phys.org/news/2025-07-large-hadron-collider-snap-theory.html
The authors ask what #stringtheory definitively cannot create. Their answer points to a single exotic particle that could show up at the #LHC. If that particle appears, the entire string-theory edifice would be, in Heckman's words, "in enormous trouble."
"We're not rooting for string theory to fail, we're stress-testing it, applying more pressure to see if it holds up. If string theory survives, fantastic, If it snaps, we'll learn something profound about nature."

Can the Large Hadron Collider snap string theory?
In physics, there are two great pillars of thought that don't quite fit together. The Standard Model of particle physics describes all known fundamental particles and three forces: electromagnetism, the strong nuclear force, and the weak nuclear force. Meanwhile, Einstein's general relativity describes gravity and the fabric of spacetime.