Infrared safe definition of jet flavor.
Salam, Gavin P
High Energy Physics, Cavendish Laboratory, University of Cambridge
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Banfi, A., Salam, G. P., & Zanderighi, G. (2006). Infrared safe definition of jet flavor.. http://www.dspace.cam.ac.uk/handle/1810/224208
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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