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 2σ C.L. at 8 TeV, which can explain the 2σ discrepancy between the CMS experimental results and theoretical predictions based on NLO calculation with parton showers.
@article{arxiv.1504.00509,
title = {Resummation prediction on gauge boson pair production with a jet veto},
author = {Yan Wang and Chong Sheng Li and Ze Long Liu},
journal= {arXiv preprint arXiv:1504.00509},
year = {2016}
}