Collinear fragmentation of pseudoscalar quarkonia from NLO NRQCD
Abstract
We discuss a new family of publicly available collinear fragmentation functions (FFs) for pseudoscalar quarkonia, the NRFF1.0 set. It builds upon the Heavy-Flavor Non-Relativistic evolution (HF-NRevo) scheme, designed to describe heavy-hadron formation through leading-power fragmentation at moderate and large transverse momentum. Heavy-quarkonium production naturally involves both perturbative and non-perturbative QCD dynamics, from the production of the heavy QQ̅ pair to its formation into a physical bound state. Within NRFF1.0, Non-Relativistic Quantum Chromodynamics (NRQCD) provides the theoretical framework for calculating the FF inputs at the initial scale, which are subsequently evolved through the HF-NRevo scheme. This setup provides a precision baseline for investigating the underlying partonic hierarchy and jet structure across the moderate- to high-transverse-momentum regime. The explicit treatment of partonic channels and heavy-flavor thresholds makes this framework particularly suitable for exploring quarkonium-in-jet fragmentation, jet-quenching sensitivity, energy-loss mechanisms, and the emergence of medium-modified fragmentation patterns in the quark-gluon plasma.
Related
- Resummation of threshold double logarithms in gluon fragmentation into 1S0[1,8] quarkonia
- Toponium hadroproduction at next-to-next-to-leading order in NRQCD
- A consistent 𝒪(v2) NRQCD description of decays and high-PT prompt production of charmonia
- Forward χc production in pp and pA collisions within the CGC+NRQCD framework
- Light cone distributions of P-wave quarkonia
BibTeX
@misc{celiberto2026collinear,
title = {{Collinear fragmentation of pseudoscalar quarkonia from NLO NRQCD}},
author = {Francesco Giovanni Celiberto and Francesca Lonigro},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.11604},
eprint = {2609.11604},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.11604},
}
RIS
TY - UNPB
TI - Collinear fragmentation of pseudoscalar quarkonia from NLO NRQCD
AU - Francesco Giovanni Celiberto
AU - Francesca Lonigro
PY - 2026
DA - 2026/09/10
PB - arXiv
DO - 10.48550/arxiv.2609.11604
UR - https://arxiv.org/abs/2609.11604
AB - We discuss a new family of publicly available collinear fragmentation functions (FFs) for pseudoscalar quarkonia, the NRFF1.0 set. It builds upon the Heavy-Flavor Non-Relativistic evolution (HF-NRevo) scheme, designed to describe heavy-hadron formation through leading-power fragmentation at moderate and large transverse momentum. Heavy-quarkonium production naturally involves both perturbative and non-perturbative QCD dynamics, from the production of the heavy QQ̅ pair to its formation into a physical bound state. Within NRFF1.0, Non-Relativistic Quantum Chromodynamics (NRQCD) provides the theoretical framework for calculating the FF inputs at the initial scale, which are subsequently evolved through the HF-NRevo scheme. This setup provides a precision baseline for investigating the underlying partonic hierarchy and jet structure across the moderate- to high-transverse-momentum regime. The explicit treatment of partonic channels and heavy-flavor thresholds makes this framework particularly suitable for exploring quarkonium-in-jet fragmentation, jet-quenching sensitivity, energy-loss mechanisms, and the emergence of medium-modified fragmentation patterns in the quark-gluon plasma.
ER -