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Heavy quark radiation in NLO+PS POWHEG generators

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arxiv 1711.06281 v2 pith:VWAUAZR7 submitted 2017-11-16 hep-ph

classification hep-ph
keywords radiationalgorithmcasegeneratorgeneratorsheavyproductionquarks
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

In this paper we deal with radiation from heavy quarks in the context of next-to-leading order calculations matched to parton shower generators. A new algorithm for radiation from massive quarks is presented that has considerable advantages over the one previously employed. We implement the algorithm in the framework of the ${\tt POWHEG-BOX}$, and compare it with the previous one in the case of the ${\tt hvq}$ generator for bottom production in hadronic collisions, and in the case of the ${\tt bb4l}$ generator for top production and decay.

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