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arXiv · 1903.12563

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·Alexander Huss·Joao Pires·Stefan Höche·Joey Huston·Silvan Kuttimalai·Simon Plätzer·Emanuele Re
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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.

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Johannes Bellm, Andy Buckley, Xuan Chen, Aude Gehrmann-De Ridder, Thomas Gehrmann, Nigel Glover, Alexander Huss, Joao Pires, Stefan Höche, Joey Huston, Silvan Kuttimalai, Simon Plätzer, Emanuele Re. 2019-03-29. Jet cross sections at the LHC and the quest for higher precision. https://doi.org/10.1140/epjc%2Fs10052-019-7574-x

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