Accounting for coherence in interjet Et flow

By M. Dasgupta, G. Salam. 2002

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Recently, interest has developed in the distribution of interjet energy flows, with for example the leading-log calculation of the highly non-trivial colour structure of primary emissions in 4-jet systems. Here we point out however that at leading-log level it is insufficient to consider only multiple primary emission from the underlying hard antenna - additionally, one must take into account the coherent structure of emission from arbitrarily complicated ensembles of large-angle soft gluons. Similar considerations apply to certain definitions of rapidity gaps based on energy flow. We examine this new class of terms in the simpler context of 2-jet events, and discover features that point at novel aspects of the QCD dynamics.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/d1f1e85740e84dd94ddecd1fdeab68f201e4266d