  We investigate the resummation effects with a jet veto, for WZ and ZZ
productions at the LHC in soft-collinear effective theory. We present the
invariant mass distributions and the total cross section with different jet
veto and jet radius for these process at Next-to-Next-to-Leading-Logarithmic
level. Our results show that the jet-veto resummation can increase the jet-veto
cross section and decrease the scale uncertainties, especially in the large
center-of-mass energy. We find that for pt_veto>30 GeV and R=0.4, the
resummation results can increase POWHEG+PYTHIA predictions by about 19% for WZ
production and 18% for ZZ production, respectively. Our results agree with the
CMS data for WZ productions within 2$\sigma$ C.L. at 8 TeV, which can explain
the 2$\sigma$ discrepancy between the CMS experimental results and theoretical
predictions based on NLO calculation with parton showers.
