And what was the prior likelihood that we would get beyond the energies required for this phenomenon to show up? What was known about this energy? Are the results we found consistent with what we know about this energy? What does the lack of jets tell us about this energy?If this is all true, particles that collided at energies beyond this graviton-leaking energy cutoff would get so close together that gravity would take over, and they would merge to form a tiny black hole. The black holes would instantly decay, so there would be no danger of Earth being swallowed whole, and the decay would be visible as jets of particles. But the researchers have so far seen no jets.
The point? This is quite far from being a knock-out blow to string theory. At worst it shows that the energies required for some effects are higher than what we can currently produce.