期刊
PHYSICAL REVIEW D
卷 97, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.97.076006
关键词
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资金
- Department of Energy (DOE) [DE-AC02-06CH11357]
- DOE [DE-AC02-06CH11357, DE-FG02-91ER40684]
- National Science Foundation (NSF) [NSF-1520916]
- DOE Office of Science [DE-AC02-06CH11357]
- Perimeter Institute for Theoretical Physics
- Government of Canada through Industry Canada
- Province of Ontario through the Ministry of Economics Development and Innovation
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.
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