Abstract
We discuss the leading-logarithmic power corrections in the N -jettiness subtraction scheme for higher-order perturbative QCD calculations. We compute the next-to-leading order power corrections for an arbitrary N -jet process, and we explicitly calculate the power correction through next-to-next-to-leading order for color-singlet production for both \( q\overline{q} \) and gg initiated processes. Our results are compact and simple to implement numerically. Including the leading power correction in the N -jettiness subtraction scheme substantially improves its numerical efficiency. We discuss what features of our techniques extend to processes containing final-state jets.
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Boughezal, R., Liu, X. & Petriello, F. Power corrections in the N -jettiness subtraction scheme. J. High Energ. Phys. 2017, 160 (2017). https://doi.org/10.1007/JHEP03(2017)160
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DOI: https://doi.org/10.1007/JHEP03(2017)160