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arXiv · 1808.09014

Associated production of a top quark with a photon via anomalous couplings

Matthew Forslund·Nikolaos Kidonakis
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Abstract

We discuss the associated production of a top quark with a photon via anomalous $t$-$q$-$γ$ couplings, and present higher-order corrections from soft-gluon emission for the processes $gq \rightarrow tγ$ at LHC energies. We perform soft-gluon resummation at next-to-leading-logarithm accuracy and derive approximate next-to-next-to-leading order (aNNLO) double-differential cross sections. We calculate at aNNLO the total $tγ$ production cross sections and the top-quark transverse-momentum and rapidity distributions for various LHC energies, and show that the soft-gluon corrections are large and dominant in these processes.

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Matthew Forslund, Nikolaos Kidonakis. 2018-10-18. Associated production of a top quark with a photon via anomalous couplings. https://doi.org/10.1103/physrevd.98.074017

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