부산대학교 도서관

We study the multiple soft gluon radiation effects in Z-boson plus jet production at the LHC. By applying the transverse-momentum-dependent factorization formalism, the large logarithms introduced by the small total transverse momentum of the Z-boson plus leading-jet final-state system are resummed to all orders in the expansion of the strong interaction coupling at the accuracy of the next-to-leading logarithm (NLL). We also compare the prediction of our resummation calculation to the CMS data by employing a reweighting procedure to estimate the effect from imposing kinematic cuts on the leptons from Z-boson decay, and we find good agreement for both the imbalance transverse momentum and the azimuthal angle correlation of the final-state Z-boson and leading-jet system, for pp→Z+jet production at the LHC.