Double parton-scattering and multiple parton interactions in ATLAS+CMS

Double parton scattering and multiple parton interaction results from the ATLAS and the CMS experiments at Large Hadron Collider (LHC) are presented. A lot of measurements on underlying events with different processes at different energy scales are available from the two major experiments at LHC. Nowadays, primary focus of LHC experiments is on studying double parton scatterings. Effective cross section is considered as the most important link to the theories. As a first step to the measurement, CMS provides the data distributions of the observables which are sensitive to double parton scatterings. ATLAS provides first measurement of effective cross section.