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arXiv · hep-ph/0605270

Infrared safe definition of jet flavour

Gavin P. Salam
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Abstract

Though it is widely taken for granted that it makes sense to separately discuss quark and gluon jets, normal jet algorithms lead to a net parton-level jet flavour that is infrared (IR) unsafe. This writeup illustrates the problem and explains how the kt algorithm can be modified to provide an IR safe parton-level flavour. As well as being of use in theoretical calculations that require a projection of higher-order contributions onto a flavour-channel of the lowest order, jet-flavour algorithms also open up the prospect of significant improvements in the accuracy of heavy-quark jet predictions.

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Gavin P. Salam. 2006-05-25. Infrared safe definition of jet flavour. https://doi.org/10.1142/9789812706706_0087

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