Electroweak-boson hadroproduction at large transverse momentum: factorization, resummation, and NNLO corrections
Nikolaos Kidonakis, Vittorio Del Duca
TL;DR
The paper tackles electroweak-boson production at large transverse momentum in hadron collisions, focusing on soft-gluon threshold corrections. It develops a factorization framework that splits the cross section into hard, soft, and collinear components and derives a next-to-leading-logarithmic (NLL) resummed cross section in moment space using soft anomalous dimensions. The authors perform a NNLO expansion of the resummed result, obtaining explicit singular terms for the $qg\to qV$ and $q\bar q\to gV$ channels, and demonstrate agreement with known NLO results while providing new NNLO predictions. The work solidifies the role of threshold resummation in EW-boson hadroproduction and yields predictions with potential impact on precision phenomenology at hadron colliders.
Abstract
We study the resummation of singular distributions for electroweak-boson production at large transverse momentum in hadronic collisions. We describe the factorization properties of the cross section near partonic threshold and construct the resummed cross section at next-to-leading logarithmic accuracy in moment space in terms of soft gluon anomalous dimensions. We present full analytical results for the expansion of the resummed cross section up to next-to-next-to-leading order. Our results can be applied to W, Z, and virtual gamma production at hadron colliders.