Soft-gluon corrections for $tqZ$ production
Nikolaos Kidonakis, Nodoka Yamanaka
TL;DR
This paper analyzes soft-gluon corrections in $tqZ$ production at hadron colliders, calculating approximate NNLO cross sections and distributions, showing significant corrections that improve theoretical precision.
Contribution
It provides the first calculation of approximate NNLO corrections for $tqZ$ production, including differential distributions and uncertainty estimates.
Findings
aNNLO corrections significantly enhance NLO cross sections
Corrections reduce theoretical uncertainties
Differential distributions in top-quark rapidity are provided
Abstract
We study soft-gluon corrections for the associated production of a single top quark and a boson ( production) at hadron colliders. We find that the radiative corrections are dominated by soft-gluon emission. We calculate the approximate NNLO (aNNLO) cross section at LHC energies, including uncertainties from scale dependence and from parton distributions. We also calculate differential distributions in top-quark rapidity. We show that the aNNLO corrections are significant and they enhance the NLO cross section while decreasing theoretical uncertainties.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Particle Detector Development and Performance