Kinematical Signatures of W+ Pair Production
  The underlying event measurement may be crucial for the new physics searches at high energies at LHC. This study presents the influence of double parton scattering on the same-sign di-muon production, where only the positive charge is taken into account for now. The signal production cross section is found to be 0.94 fb within the kinematic range of the ATLAS detector. This creates around 25 per cent of the total cross section for the searched final state. 
Miroslav Myska
hep-ex