Infrared safe definition of jet flavour

Details Infrared safe definition of jet flavour Infrared safe definition of jet flavour

2006-01-17

arxiv.org/abs/hep-ph/0601139v1

Eur.Phys.J.C47:113-124,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 7 figures

Scientific paper

10.1140/epjc/s2006-02552-4

It is common, in both theoretical and experimental studies, to separately discuss quark and gluon jets. However, even at parton level, widely-used jet algorithms fail to provide an infrared safe way of making this distinction. We examine the origin of the problem, and propose a solution in terms of a new "flavour-kt" algorithm. As well as being of conceptual interest this can be a powerful tool when combining fixed-order calculations with multi-jet resummations and parton showers. It also has applications to studies of heavy-quark jets.

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