The resummation of inter-jet energy flow for gaps-between-jets processes at HERA

Abstract

We calculate resummed perturbative predictions for gaps-between-jets processes and compare to HERA data. Our calculation of this non-global observable needs to include the effects of primary gluon emission (global logarithms) and secondary gluon emission (non-global logarithms) to be correct at the leading logarithm (LL) level. We include primary emission by calculating anomalous dimension matrices for the geometry of the specific event definitions and estimate the effect of non-global logarithms in the large $N_c$ limit. The resulting predictions for energy flow observables are consistent with experimental data.

31 pages, 4 figures, 2 tables

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• Event Shape/Energy Flow Correlations
• Non-global logarithms in inter-jet energy flow with kt clustering requirement
• KtJet: A C++ implementation of the Kt clustering algorithm
• On large angle multiple gluon radiation
• Soft Gluon Exponentiation and Resummation

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• On QCD resummation with kt clustering
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• Soft evolution of multi-jet final states
• The dijet cross section with a jet veto
• The colour evolution of the process q q -> q q g
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• Calculating the primary Lund Jet Plane density
• Super-leading logarithms in non-global observables in QCD: Fixed order calculation
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• Soft gluons in Higgs plus two jet production
• Probing the Gauge Content of Heavy Resonances with Soft Radiation
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• Symmetry of Anomalous Dimension Matrices for Colour Evolution of Hard Scattering Processes
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• High Energy Photoproduction
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• Soft gluons and superleading logarithms in QCD
• Dijet Azimuthal Correlations in QCD Hard Processes
• Analytical structure of k${}_t$ clustering to any order
• Factorization at the LHC: From PDFs to Initial State Jets (Ph.D. thesis)
• Structure of non-global logarithms with Cambridge/Aachen clustering