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Quarkonium fragmentation in a variable-flavor number scheme: Towards NRFF1.0

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arxiv 2406.10779 v2 pith:3A3YACJE submitted 2024-06-16 hep-ph hep-exnucl-exnucl-th

Francesco Giovanni Celiberto This is my paper · ORCID
classification hep-phhep-exnucl-exnucl-th
keywords fragmentationnrff1partonproductionquarkoniumuncertaintiesvariable-flavoraddress
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We report progress on the determination and study of quarkonium production within the fragmentation approximation. Our analyses address the moderate and large transverse-momentum regime, where the collinear fragmentation of a single parton is expected to dominate over the short-distance production, directly from the hard scattering, of the constituent $(Q \bar{Q})$ system. Parton fragmentation channels to pseudoscalar and vector quarkonia are built on the basis of non-Relativistic QCD next-to-leading computations, which we use to model initial-scale fragmentation inputs. Thus, a preliminary family of Variable-Flavor Number-Scheme (VFNS) fragmentation functions, named NRFF1.0, are constructed through standard DGLAP evolution. Statistical uncertainties are obtained from a Monte Carlo, replica-like approach embodying missing higher-order uncertainties.

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Cited by 4 Pith papers

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