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arXiv · hep-ph/0303101

On large angle multiple gluon radiation

Yu. L. Dokshitzer·G. Marchesini
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Abstract

Jet shape observables which involve measurements restricted to a part of phase space are sensitive to multiplication of soft gluon with large relative angles and give rise to specific single logarithmically enhanced (SL) terms (non-global logs). We consider associated distributions in two variables which combine measurement of a jet shape V in the whole phase space (global) and that of the transverse energy flow away from the jet direction, Eout (non-global). We show that associated distributions factorize into the global distribution in V and a factor that takes into account SL contributions from multi-gluon ``hedgehog'' configurations in all orders. The latter is the same that describes the single-variable Eout distribution, but evaluated at a rescaled energy VQ.

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Yu. L. Dokshitzer, G. Marchesini. 2003-03-13. On large angle multiple gluon radiation. https://doi.org/10.1088/1126-6708%2F2003%2F03%2F040

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