Physicists have combed through data from the Large Hadron Collider looking for microscopic quantum black holes, a phenomenon that could appear if extra dimensions exist. The search found no evidence that the machine has produced such objects, according to a report from ScienceDaily.
The absence of a signal does not rule out quantum black holes entirely. Instead, the result sharply narrows where this exotic physics could still be hiding, placing new constraints on theoretical models that predict extra dimensions.
For now, the LHC's silence leaves the door open only in a smaller, more tightly bounded region of parameter space. The finding gives experimenters a clearer target for future searches.