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arXiv · 1612.02911

Power Corrections in the N-jettiness Subtraction Scheme

Radja Boughezal·Xiaohui Liu·Frank Petriello
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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 $q\bar{q}$ 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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Radja Boughezal, Xiaohui Liu, Frank Petriello. 2017-04-03. Power Corrections in the N-jettiness Subtraction Scheme. https://doi.org/10.1007/jhep03(2017)160

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