Power Corrections for N-Jettiness Subtractions at O(α[subscript s])
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13130_2018_Article_9594.pdf
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Author(s)
Moult, Ian
Tackmann, Frank J.
Zhu, Hua Xing
Ebert, Markus
Stewart, Iain W
Vita, Gherardo
Date Issued
December 2018
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Ebert, Markus A., et al. “Power Corrections for N-Jettiness Subtractions at O(α[subscript s]).” Journal of High Energy Physics, vol. 2018, no. 12, Dec. 2018. © The Authors
Version
Final published version
Abstract
We continue the study of power corrections for N -jettiness subtractions by analytically computing the complete next-to-leading power corrections at O(αs) for colorsinglet production. This includes all nonlogarithmic terms and all partonic channels for Drell-Yan and gluon-fusion Higgs production. These terms are important to further improve the numerical performance of the subtractions, and to better understand the structure of power corrections beyond their leading logarithms, in particular their universality. We emphasize the importance of computing the power corrections differential in both the invariant mass, Q, and rapidity, Y, of the color-singlet system, which is necessary to account for the rapidity dependence in the subtractions. This also clarifies apparent disagreements in the literature. Performing a detailed numerical study, we find excellent agreement of our analytic results with a previous numerical extraction. Keywords: QCD, Phenomenology
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1007/JHEP12(2018)084
