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A consistent resummation of mass and soft logarithms in processes with heavy flavours

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arxiv 2309.06139 v2 pith:2WVJIM3H submitted 2023-09-12 hep-ph

Andrea Ghira , Simone Marzani , Giovanni Ridolfi This is my paper · ORCID
classification hep-ph
keywords calculationsmasslessmassivelogarithmsmassprocessessoftflavours
verification ladder T0 review T1 audit T2 compute T3 formal
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Perturbative calculations for processes that involve heavy flavours can be performed in two approaches: the massive scheme and the massless one. The former enables one to fully account for the heavy-quark kinematics, while the latter allows one to resum potentially-large mass logarithms. Furthermore, the two schemes can be combined to take advantage of the virtues of each of them. Both massive and massless calculations can be supplemented by soft-gluon resummation. However matching between massive and massless resummed calculations is difficult, essentially because of the non-commutativity of the soft and massless limits. In this paper, we develop a formalism to combine resummed massless and massive calculations. We obtain an all-order expression that consistently resums both mass and soft logarithms to next-to-leading logarithmic accuracy. We perform detailed calculations for the decay of the Higgs into a heavy-quark pair and discuss the applications of this formalism to different processes.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Bridging massive and massless schemes for soft gluon resummation in heavy-flavour production in $e^+e^-$ collisions

    hep-ph 2024-12 conditional novelty 6.0 of 10

    The paper computes the O(alpha_s) soft-limit constants that interpolate between massive and massless scheme resummations, raising the accuracy of heavy-flavour fragmentation predictions from NLL to NLL'.

  2. Bottomoniumlike states in proton collisions: Fragmentation and resummation

    hep-ph 2024-12 conditional novelty 6.0 of 10

    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.

  3. Heavy quark mass effects in the Energy-Energy Correlation in the back-to-back region

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Massive quark Sudakov resummation for e+e- energy-energy correlations is extended to NNLL accuracy, and the NLL dead cone angle is enlarged by sqrt(e).

  4. Heavy Flavor Jet Substructure at Lepton Colliders

    hep-ph 2025-02 conditional novelty 4.0 of 10

    NLL-accurate predictions for heavy-flavor energy correlation functions and jet angularities in e+e- collisions show all tested Monte Carlo generators overestimate the dead-cone suppression.

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

    hep-ph 2024-12 conditional novelty 4.0 of 10

    A preliminary NLO set of quarkonium fragmentation functions, NRFF1.0, is introduced and proposed as input for quarkonium-in-jet fragmentation studies.

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