Effect of charged partons on black hole production at the Large Hadron Collider

The cross section for black hole production in hadron colliders is calculatedusing a factorization hypothesis in which the parton-level process isintegrated over the parton density functions of the protons. The mass, spin,charge, colour, and finite size of the partons are usually ignored. We examinethe effects of parton electric charge on black hole production using thetrapped-surface approach of general relativity. Accounting for electric chargeof the partons could reduce the black hole cross section by one to four ordersof magnitude at the Large Hadron Collider. The cross section results aresensitive to the Standard Model brane thickness. Lower limits on the amount ofenergy trapped behind the event horizon in the collision of charged particlesare also calculated.Comment: corrected typo in figure 1b; added some clarification in 3 places; 21 pages, 9 figures, JHEP3 forma