Away-from-jet energy flow | Zendy

Andrea Banfi | Zendy; Giuseppe Marchesini | Zendy; Graham E Smye | Zendy

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Away-from-jet energy flow

Author(s) -

Andrea Banfi,

Giuseppe Marchesini,

Graham E Smye

Publication year - 2002

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2002/08/006

Subject(s) - observable , limit (mathematics) , physics , logarithm , jet (fluid) , quantum chromodynamics , flow (mathematics) , energy flow , ideal (ethics) , theoretical physics , high energy , perturbative qcd , energy (signal processing) , statistical physics , mathematical physics , particle physics , quantum mechanics , mathematics , mechanics , mathematical analysis , philosophy , epistemology

We consider interjet observables in hard QCD processes given by the energyflow E_out in a region away from all hard jets. Here the QCD radiation isdepleted (E_out << Q), and therefore these observables provide ideal means tostudy non-perturbative effects. We derive an evolution equation (in the largeN_c limit) which resums, for large Q/E_out, all leading terms arising fromlarge angle soft emission (double logarithms are absent). We discuss theanalytical features of the result and identify universal and geometry-dependentcontributions. Our analysis confirms features found using numerical methods byDasgupta and Salam.Comment: 29 pages, 2 figures, JHEP class included. Paper versio

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