Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-01-17
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.
Banfi Andrea
Salam Gavin P.
Zanderighi Giulia
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