Measurements of the WZ di-boson production cross section at center of mass energy = 1.96 TeV in the dielectron and dimuon channels

The cross section measurements of WZ and ZZ di-boson productions using proton-antiproton collisions at s = 1.96 TeV using the data collected with the DOdetector at Fermilab is presented. Both the ee + jets and mumu + jets final states are considered, with total luminosities 1044 pb-1 and 948 pb-1 respectively in each channel. Both of the leptons are decay products of a Z boson. This study uses a different approach to simple likelihood method. The measured cross sections for the two processes are: WsZ/ZZ→eejj=2.67+/- 1.90pb and WsZ/ZZ→mmj j=3.45+/-3.51pb. .