## Abstract

We present a detailed derivation of the power corrections to the factorization theorem for the 0-jettiness event shape variable T. Our calculation is performed directly in QCD without using the formalism of effective field theory. We analytically calculate the next-to-leading logarithmic power corrections for small T at next-to-leading order in the strong coupling constant, extending previous computations which obtained only the leading-logarithmic power corrections. We address a discrepancy in the literature between results for the leading-logarithmic power corrections to a particular definition of 0-jettiness. We present a numerical study of the power corrections in the context of their application to the N-jettiness subtraction method for higher-order calculations, using gluon-fusion Higgs production as an example. The inclusion of the next-to-leading-logarithmic power corrections further improves the numerical efficiency of the approach beyond the improvement obtained from the leading-logarithmic power corrections.

Original language | English (US) |
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Article number | 073008 |

Journal | Physical Review D |

Volume | 97 |

Issue number | 7 |

DOIs | |

State | Published - Apr 1 2018 |

## ASJC Scopus subject areas

- Physics and Astronomy (miscellaneous)