Corpus ID: 235898884

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

  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},
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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