Dynamical approach to MPI in W+dijet and Z+dijet production within the PYTHIA event generator

The new numerical approach that includes 1 to 2 mechanism is applied to double partonscattering (DPS) in W+dijet and Z+dijet final state production in proton-proton collisionsat LHC. By using the underlying event (UE) simulation from a pythia 8 tune extracted inhadronic events, we show that, like in the case of a four-jet final state, the inclusion of 1 to 2mechanisms improves the description of experimental data measured at 7 TeV. In addition,predictions for proton-proton collisions at a center-of-mass energy of 14 TeV are shown forDPS- and UE-sensitive observables