Upper limits on ADD black hole mass MB at 14 TeV LHC range from 11.83 TeV (ζ=0, D=3, ΛD=1 TeV) down to 7.65 TeV (ζ=0.35), with similar shifts for D=7 and higher ΛD.
Search for large extra dimensions in dimuon and dielectron events in pp collisions at sqrt(s) = 7 TeV
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Results are presented from a search for large, extra spatial dimensions in events with either two isolated muons or two isolated electrons. The data are from proton-proton interactions at sqrt(s) = 7 TeV collected with the CMS detector at the LHC. The size of the data sample corresponds to an integrated luminosity of approximately 2 inverse femtobarns. The observed dimuon and dielectron mass spectra are found to be consistent with standard-model expectations. Depending on the number of extra dimensions, the 95% confidence level limits from the combined dimuon and dielectron channels range from Ms > 2.4 TeV to Ms > 3.8 TeV, where Ms characterizes the scale for the onset of quantum gravity.
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Constraining ADD black holes at the LHC with $\sqrt{s} = 14$ TeV
Upper limits on ADD black hole mass MB at 14 TeV LHC range from 11.83 TeV (ζ=0, D=3, ΛD=1 TeV) down to 7.65 TeV (ζ=0.35), with similar shifts for D=7 and higher ΛD.