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arXiv · 2403.14419

Five-flavour scheme predictions for $t\bar{t}b\bar{b}$ at next-to-leading order accuracy

Rikkert Frederix·Tetiana Moskalets
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Abstract

We compute top quark pair production in association with a bottom quark pair at the LHC within the five-flavour scheme, matched to a parton shower, employing the FxFx merging scheme for $t\bar{t}+\textrm{jets}$ production with up to 2 jets at NLO accuracy. To enhance the selection efficiency for the events with $b$-jets within the inclusive five-flavour sample, we augment the generation probability of bottom quark flavours in the short-distance event generation. Our analysis reveals some differences from NLO predictions within the four-flavour scheme.

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Rikkert Frederix, Tetiana Moskalets. 2024-03-21. Five-flavour scheme predictions for $t\bar{t}b\bar{b}$ at next-to-leading order accuracy. https://doi.org/10.1140/epjc%2Fs10052-024-13128-3

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