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NNLO B-fragmentation fits and their application to $t\bar t$ production and decay at the LHC

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arxiv 2210.06078 v2 pith:HMKX4K6W submitted 2022-10-12 hep-ph hep-ex

Micha{l} Czakon , Terry Generet , Alexander Mitov , Rene Poncelet This is my paper · ORCID
classification hep-phhep-ex
keywords leadingnext-to-next-toproductionsetsworkfinalfragmentationfunctions
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

In this work we derive three sets of non-perturbative fragmentation functions, with uncertainties, for $B$-hadrons, $J/\psi$'s and muons resulting from semileptonic $B$ decays. All three sets are with next-to-next-to leading order accuracy and include next-to-next-to leading logarithmic soft gluon resummation. The novel feature of these new sets is that they are fully consistent with our formalism for next-to-next-to leading order (NNLO) calculations for final states with identified $B$, $J/\psi$ or a $\mu$. We employ the fragmentation functions derived in this work to make state of the art predictions for such final states in $t\bar t$ events at the LHC. A special emphasis is placed on observables sensitive to the top quark mass. The present work opens the door for many LHC applications, like, open $B$ production or $B$ production in association with bosons.

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Forward citations

Cited by 5 Pith papers

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    New TQHL1.1 and TQ4Q1.1 fragmentation functions for doubly and fully bottomed tetraquarks are constructed and evolved, yielding first predictions for bottom-tetraquark plus jet distributions at 14 and 100 TeV.

  5. On the quarkonium-in-jet collinear fragmentation at moderate-to-large transverse momentum

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