Whether or not a mini black hole would disappear depends on whether or not the theory of Hawking Radiation is true, which is the idea of a quark-antiquark pair being close enough to the event horizon that one gets sucked in and the other flies away. Plus I’m skeptical of the claim that more antiquarks would be sucked in and more quarks emitted than just having a roughly equal ratio of both.

So if this is not the case, the black hole will stay there and only get bigger. And at first it may only acgreat timesulate a few photons or just a handful of other tiny particles, but the event horizon will start to expand and sooner or later it will engulf more and more until we’re ****ed.

Unlikely scenario though. I hope.

Also http://www.hasthelargehadroncolliderdestroyedtheworldyet.com/