European Physical Journal C: Particles and Fields (Feb 2020)

Jet cross sections at the LHC and the quest for higher precision

  • Johannes Bellm,
  • Andy Buckley,
  • Xuan Chen,
  • Aude Gehrmann-De Ridder,
  • Thomas Gehrmann,
  • Nigel Glover,
  • Stefan Höche,
  • Alexander Huss,
  • Joey Huston,
  • Silvan Kuttimalai,
  • Joao Pires,
  • Simon Plätzer,
  • Emanuele Re

DOI
https://doi.org/10.1140/epjc/s10052-019-7574-x
Journal volume & issue
Vol. 80, no. 2
pp. 1 – 23

Abstract

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Abstract We perform a phenomenological study of Z plus jet, Higgs plus jet and di-jet production at the Large Hadron Collider. We investigate in particular the dependence of the leading jet cross section on the jet radius as a function of the jet transverse momentum. Theoretical predictions are obtained using perturbative QCD calculations at the next-to and next-to-next-to-leading order, using a range of renormalization and factorization scales. The fixed order predictions are compared to results obtained from matching next-to-leading order calculations to parton showers. A study of the scale dependence as a function of the jet radius is used to provide a better estimate of the scale uncertainty for small jet sizes. The non-perturbative corrections as a function of jet radius are estimated from different generators.