Determination of the top quark mass from the $t\bar t$ cross section   measured by CMS at $\sqrt{s} = 7$ TeV
  Higher-order QCD predictions are used to extract the top quark mass, both in the pole and in the $\bar{\mathrm{MS}}$ scheme, from the top quark pair production cross section measured in the dilepton final state. The analysed dataset corresponds to an integrated luminosity of 1.14 fb$^{-1}$ collected by the CMS experiment in 2011 in proton-proton collisions at $\sqrt{s} = 7$ TeV. 
Maria Aldaya, Katerina Lipka and Sebastian Naumann-Emme (for the CMS   Collaboration)
hep-ex