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arXiv · 1712.01144

Higher-order corrections for $tZ$ production via anomalous couplings

Nikolaos Kidonakis
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Abstract

I present higher-order corrections from soft-gluon emission for the associated production of a top quark with a $Z$ boson via anomalous $t$-$q$-$Z$ couplings at LHC energies. Approximate next-to-next-to-leading order (aNNLO) double-differential cross sections are derived from soft-gluon resummation at next-to-leading-logarithm accuracy. The total $tZ$ production cross sections and the top-quark transverse-momentum and rapidity distributions are calculated at aNNLO for various LHC energies. It is shown that the soft-gluon corrections are dominant and large for this process.

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Nikolaos Kidonakis. 2017-12-04. Higher-order corrections for $tZ$ production via anomalous couplings. https://doi.org/10.1103/physrevd.97.034028

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