Jet mass distribution in Higgs/vector boson + jet events at hadron colliders with $k_t$ clustering

Abstract

We address the issues of clustering and non-global logarithms for jet shapes in the process of production of a Higgs/vector boson associated with a single hard jet at hadron colliders. We perform an analytical fixed-order calculation up to second order in the coupling as well as an all-orders estimation for the specific invariant mass distribution of the highest-$p_t$ jet, for various jet algorithms. Our results are derived in the eikonal (soft) limit and are valid up to next-to-leading logarithmic accuracy. We perform a matching of the resummed distribution to next-to-leading order results from MCFM and compare our findings with the outputs of the Monte Carlo event generators Pythia 8 and Herwig 7. After accounting for non-perturbative effects we compare our results with available experimental data from the CMS collaboration for the Z + jet production. We find good agreement over a wide range of the observable.

18 pages, 14 figures

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Cited by in corpus (9)

• Higher-order non-global logarithms from jet calculus
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• Lund multiplicity in QCD jets
• Azimuthal decorrelation between a jet and a Z boson at hadron colliders
• Non-global logarithms up to four loops at finite-N${}_c$ for V/H+jet processes at hadron colliders
• Analytical structure of k${}_t$ clustering to any order
• Hemisphere mass up to four-loops with generalised $k_t$ algorithms
• Resummed jet mass distribution with trimming in Z+jet events at the LHC
• Structure of non-global logarithms with Cambridge/Aachen clustering