Recent results on UE and double parton scattering

The underlying event in jet production events is measured, with both an inclusive jet and exclusive di-jet selection. Results are corrected to the particle level and compared with a variety of MC models. Events containing a leptonic W-boson decay and 2 jets are examined to determine the effective cross-section for double-parton interactions. The vector sum of the jet pTs is examined, and templates are fitted to this distribution to determine the fraction of selected events arising from DPI. An effective cross-section of 15 mb (+- 3 stat, +5-3 sys) is extracted.