Resummation, Evolution and Factorization REF 2026

Session

Talks XI

22 Oct 2026, 11:40

Santiago de Compostela, Spain

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

Dr Francesco Giovanni Celiberto (UAH Madrid)

22/10/2026, 11:40

We present a systematic study of all-charm tetraquark fragmentation in high-energy hadronic collisions within a heavy-flavor fragmentation framework in QCD. As part of this program, we construct the TQ4Q2.0 fragmentation functions by consistently incorporating, for the first time, all leading-power partonic fragmentation channels. The calculation combines updated NRQCD-inspired initial-scale...

8. Threshold-Aware Evolution for Heavy-Quarkonia via Heavy Flavor Non-Relativistic evolution HF-NRevo

Francesca Lonigro

22/10/2026, 12:00

We investigate the inclusive hadroproduction of the pseudoscalar heavy-quarkonium mesons at moderate-to-large transverse momenta. Our theoretical framework is based on the Non-Relativistic QCD (NRQCD) and it assumes the single-parton collinear fragmentation mechanism within a variable-flavor number scheme. NRQCD indeed describes the formation of the heavy quark bound state at the initial scale...

20. High-pT charmonium hadroproduction in NRQCD up to O(v^2) in NRQCD at NLO+NLL: is NRQCD converging faster than expected ?

Jean-Philippe Lansberg (Université Paris-Saclay (FR))

22/10/2026, 12:20

We present a global determination of the charmonium relativistic velocity parameters $\langle v^2_{\psi(2S)} \rangle$ and $\langle v^2_{J/\psi} \rangle$ from decay widths and high-$P_T$ prompt charmonium measurements at the LHC, combined with NLO NRQCD predictions for direct production and feed-down contributions from $\chi_c$ and $\psi(2S)$.

Building on a leading-power fragmentation...