The paper delivers the first NNLO 0-jettiness soft function for hadronic top-quark pair production and generalises SoftSERVE to massive quarks.
A simplified expression for the one-loop soft-gluon current with massive fermions
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abstract
We present a much simpler analytic expression for the UV un-renormalized one-loop soft-gluon current which controls the infra-red behavior of one-loop QCD amplitudes with massive fermions when an external gluon becomes soft. The result is given entirely in terms of standard polylogarithms, is of uniform transcendentality and is well-suited for computer implementation.
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NNLO soft functions for heavy-quark pair production at hadron colliders
The paper delivers the first NNLO 0-jettiness soft function for hadronic top-quark pair production and generalises SoftSERVE to massive quarks.