Search for Extra Dimensions in Dimuon Events in pp Collisions at sqrt(s) = 8 TeV

We report the results of a search for large spatial extra dimensions in events with two isolated muons collected in proton proton collisions at $\sqrt{s} = 8\,$TeV with the CMS detector at the LHC. The dimuon invariant mass spectrum is measured with an integrated luminosity of $20.6\,$fb$^{-1}$. The standard model expectation is found to be consistent with the measurement. Limits of up to $4.49\,$TeV at 95\% C.L. are set on the model parameter $M_{s}$, depending on the number of extra dimensions and the validity range of the theory.