Search for strong gravity effects in same-sign dimuon final states

A search for mini black holes has been performed in a same sign dimuon final state using31 pb−1 of proton-proton collision data collected by the ATLAS detector at a centre of mass energy of 7 TeV at the CERN Large Hadron Collider. Using the total number of charged particles to define the signal region, the data are found to be consistent with the expectation from the Standard Model. These results are used to set upper limits on the cross section for new physics to this final state. Exclusion contours are derived in the context of a low scale gravity model.