  Quantum black hole production at the Large Hadron Collider is investigated
using the horizon quantum mechanics model. This model has novel implications
for how black holes might be observed in collider experiments. Black hole
production is predicted to be possible below the Planck scale, thus leading to
the intriguing possibility that black holes could be produced even if the
Planck scale is slightly above the collider centre of mass energy. In addition,
the usual anticipated resonance in the black hole mass distribution is
significantly widened in this model. For values of the Planck scale above the
current lower limits, the shape of the black hole mass distribution is almost
independent of the Planck scale and depends more on the number of extra
dimensions. These model features suggest the need for alternative search
strategies in collider experiments.
