Corpus ID: 235898884

Next-to-leading power two-loop soft functions for the Drell-Yan process at threshold

@inproceedings{Broggio2021NexttoleadingPT,
  title={Next-to-leading power two-loop soft functions for the Drell-Yan process at threshold},
  author={A. Broggio and S. Jaskiewicz and L. Vernazza},
  year={2021}
}
We calculate the generalized soft functions at O(α2 s) at next-to-leading power accuracy for the Drell-Yan process at threshold. The operator definitions of these objects contain explicit insertions of soft gauge and matter fields, giving rise to a dependence on additional convolution variables with respect to the leading power result. These soft functions constitute the last missing ingredient for the validation of the bare factorization theorem to NNLO accuracy. We carry out the calculations… Expand

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References

SHOWING 1-10 OF 49 REFERENCES
On next-to-leading power threshold corrections in Drell-Yan production at N3LO
A bstractThe cross-section for Drell-Yan production of a vector boson has been previously calculated at next-to-next-to-leading order, supplemented by enhanced logarithmic terms associated with theExpand
Exclusive soft function for Drell-Yan at next-to-next-to-leading order
We present next-to-next-to-leading-order (NNLO) results for an exclusive soft function that appears in a recently developed factorization theorem for transverse momentum distributions. TheExpand
Leading-logarithmic threshold resummation of the Drell-Yan process at next-to-leading power
A bstractWe resum the leading logarithms αsn ln2n − 1(1 − z), n = 1, 2, . . . near the kine-matic threshold z = Q2/ŝ → 1 of the Drell-Yan process at next-to-leading power in the expansion in (1 − z).Expand
The NNLO soft function for the pair invariant mass distribution of boosted top quarks
A bstractAt high values of the pair invariant mass the differential cross section for top-quark pair production at hadron colliders factorizes into soft, hard, and fragmentation functions. In thisExpand
Non-abelian factorisation for next-to-leading-power threshold logarithms
A bstractSoft and collinear radiation is responsible for large corrections to many hadronic cross sections, near thresholds for the production of heavy final states. There is much interest inExpand
The next-to-next-to-leading order soft function for top quark pair production
A bstractWe present the first calculation of the next-to-next-to-leading order threshold soft function for top quark pair production at hadron colliders, with full velocity dependence of the massiveExpand
Next-to-leading power threshold corrections for finite order and resummed colour-singlet cross sections
We study next-to-leading-power (NLP) threshold corrections in colour-singlet production processes, with particular emphasis on Drell-Yan (DY) and single-Higgs production. We assess the quality of theExpand
Next-to-eikonal corrections to soft gluon radiation: a diagrammatic approach
We consider the problem of soft gluon resummation for gauge theory amplitudes and cross sections, at next-to-eikonal order, using a Feynman diagram approach. At the amplitude level, we proveExpand
Diagrammatic resummation of leading-logarithmic threshold effects at next-to-leading power
Perturbative cross-sections in QCD are beset by logarithms of kinematic invariants, whose arguments vanish when heavy particles are produced near threshold. Contributions of this type often need toExpand
A complete basis of helicity operators for subleading factorization
A bstractFactorization theorems underly our ability to make predictions for many processes involving the strong interaction. Although typically formulated at leading power, the study of factorizationExpand
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