Away-from-jet energy flow

By A. Banfi, G. Marchesini, G. Smye. 2002

227 citations recorded by the source corpus.

We consider interjet observables in hard QCD processes given by the energy flow Eout in a region away from all hard jets. Here the QCD radiation is depleted (Eout << Q), and therefore these observables provide ideal means to study non-perturbative effects. We derive an evolution equation (in the large Nc limit) which resums, for large Q/Eout, all leading terms arising from large angle soft emission (double logarithms are absent). We discuss the analytical features of the result and identify universal and geometry-dependent contributions. Our analysis confirms features found using numerical methods by Dasgupta and Salam.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/2523f134c0bfa6b53db770c476aac9bf6599cd0a

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In Nuclear and High Energy Physics

Citations in the corpus

Towards an understanding of jet substructure (2013, background): “Note that non-global logarithms are moderately problematic, because their resummation [21, 47, 52–54] has until very recently always been restricted to the large-NC limit.”
Introduction to Soft-Collinear Effective Theory (2014, methodology): “Except for the leading non-global logarithms in the large Nc limit, which can be resummed using Monte Carlo methods [245] or by solving an integrodifferential equation [246], their resummation is not yet understood.”
Jet shapes and jet algorithms in SCET (2010, background): “) These issues are related to some types of “non-global” logarithms described by [46, 56, 57, 58] that spoil the simple characterization of NLL accuracy.”
Energy correlation functions for jet substructure (2013, unknown): “The effect of non-global logarithms on the cumulative distribution can, for our purposes, be approximated in the large-NC limit as [79–81] Σwith NG = e −CCA π 2 12 αs π2 L2Σ = e−CA π2 12 αs π Σ .”
Phenomenology of event shapes at hadron colliders (2010, background): “Additional soft, large-angle contributions have to be resummed, which is currently possible only in the large-Nc limit [23, 24, 51] (though see also [52]).”
Jet substructure at the Large Hadron Collider: A review of recent advances in theory and machine learning (2017, background): “Shortly after this, Banfi, Marchesini, and Smye (BMS) developed an evolution equation [347] that describes NGLs in the leading number of colors Nc and leadinglogarithmic approximations.”
Jet substructure at the Tevatron and LHC: new results, new tools, new benchmarksReport prepared by the participants of the BOOST 2011 Workshop at Princeton University, 22–26 May 2011. L Asquith (lasquith@hep.anl.gov), S Rappoccio (rappocc@fnal.gov) and C K Vermilion (verm@uw.edu), editors. (2011, background): “Nearly every jet measurement made at the LHC will have non-global observables, and their resummation is more challenging and can only be performed in the leading-colour approximation [90, 91, 92, 93].”
Les Houches 2013: Physics at TeV Colliders: Standard Model Working Group Report (2014, background): “When more than a tagged jet is present in the process, the infrared structure of the perturbative series becomes more complex and new logarithms of the non-global type [434, 435] appear.”
The Catchment Area of Jets (2008, background): “One should of course bear in mind that the multi-particle structure of the hadron level is such that a single-gluon result cannot contain all the relevant physics — this implies that one should, in future work, examine multi-soft gluon radiation as well, perhaps along the lines of the calculation of”