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Towards Quarkonium Fragmentation from NRQCD in a Variable-Flavor Number Scheme

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arxiv 2405.08221 v1 pith:I4DQ3DVR submitted 2024-05-13 hep-ph hep-exnucl-th

Francesco Giovanni Celiberto This is my paper · ORCID
classification hep-phhep-exnucl-th
keywords fragmentationnrqcdquarkoniumschemevariable-flavoraccountsaddressaimed
verification ladder T0 review T1 audit T2 compute T3 formal
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We address quarkonium formation at moderate to large transverse momenta, where the single-parton collinear fragmentation prevails over the short-distance emission, directly from the hard sub-scattering, of the constituent heavy-quark pair. We rely on Non-Relativistic-QCD (NRQCD) Next-to-Leading Order (NLO) calculations for all parton fragmentation channels to quarkonia, taken as proxies for initial-scale inputs. Preliminary sets of Variable-Flavor Number-Scheme (VFNS) fragmentation functions (FFs) are built via a DGLAP scheme that properly accounts for evolution thresholds. Statistical errors are assessed via a Monte Carlo (MC), replica-like approach aimed at catching Missing Higher-Order Uncertainties (MHOUs).

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Forward citations

Cited by 5 Pith papers

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  4. All-charm tetraquarks at hadron colliders: A high-precision fragmentation perspective

    hep-ph 2026-04 unverdicted novelty 5.5 of 10

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