Soft-gluon corrections for $tqZ$ production

Abstract

We study soft-gluon corrections for the associated production of a single top quark and a $Z$ boson ($tqZ$ 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.

10 pages, 4 figures

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Cited by in corpus (6)

• Higher-order corrections in $t\bar{t}\gamma$ cross sections
• Soft-gluon corrections in $t\bar{t}W$ production
• SMEFT chromomagnetic dipole operator contributions to $t\bar{t}$ production at approximate NNLO in QCD
• Resummation for $s$-channel single-top production
• Single-top quark physics at the LHC: from precision measurements to rare processes and top quark properties
• Higher-order QCD and electroweak corrections for $t\bar{t}H$ production