A microscopic black hole created at the LHC, with a mass measured in a few teraelectronvolts, would exist for an almost impossibly short amount of time. Current predictions put its lifetime at about ten to the minus twenty-seventh of a second.
That number is so small that, in that entire span, light would not even travel the width of an atomic nucleus.
The black hole would disappear before it could meaningfully move, fall, or interact with anything around it. It would simply flash into existence and vanish immediately.
If these tiny black holes can form during high-energy particle collisions, they would not stick around or consume matter. Instead, they would evaporate almost instantly, releasing a sudden spray of particles as they disappear.