Jet cross sections at the LHC and the quest for higher precision
Johannes Bellm, A. G. Buckley, Xuan Chen, A. Gehrmann–De Ridder, T. Gehrmann, E. W. N. Glover, Stefan Höche, Alexander Huss, J. Huston, Silvan Kuttimalai, J. Pires, Simon Plätzer, Emanuele Ré
Abstract
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.