We provide state-of-the art SCETlib predictions for the $W$ and $Z/\gamma^∗$ transverse-momentum ($q_T$) distributions at the LHC at complete three-loop order in resummed perturbation theory (N$^3$LL$'$) and matched to available fixed order. We compare our predictions to high-precision measurements by the ATLAS and CMS experiments. We pay particular attention to the estimation of perturbative...
Two gluon TMDs with different Wilson line configurations have been studied intensively at small-x: the Weizsacker-Williams type and the dipole type. They have different transverse momentum dependences and thus they will correspond to two different integrated gluon distributions. However, these two distributions have exactly the same expressions in light-cone gauge. In this talk, I will discuss...