4th Joint ECFA-NuPECC-APPEC Workshop “Synergies between the EIC and the LHC”

Session

Quarkonium

8 Jun 2026, 14:30

Cagliari, Italy

71. Open quantum dynamics of quarkonium: from spectral functions to recombination

Elena G. Ferreiro

08/06/2026, 14:30

We present a unified open quantum system framework for the description of heavy quarkonium in QCD matter, connecting in-medium spectral properties, dynamical evolution, and recombination processes within a single consistent approach. Starting from a complex heavy-quark potential, whose real and imaginary parts encode binding and in-medium dissociation effects, we construct spectral functions...

63. High P_T prompt psi(2S) and J/\psi hadroproduction

Jean-Philippe Lansberg (IJCLab- Paris-Saclay U. - CNRS)

08/06/2026, 14:55

We study relativistic corrections to prompt $\psi(2S)$ and $J/\psi$ at high $P_T$ in hadron colliders. Our calculation employs leading-power factorization with Fragmentation Functions (FFs) computed in nonrelativistic QCD and evolved to next-to-leading-logarithmic accuracy. We extract constraints on the $\chi_c$ feeddown to the $J/\psi$ yield from the measured $\psi(2S)/J/\psi$ yield ratio....

81. Heavy quarkonium production in jet at the EIC and LHC

Daekyoung Kang (Sejong University)

08/06/2026, 15:20

We present an investigation into heavy quarkonium production within jets, employ-
ing a theoretical framework that integrates Soft-Collinear Effective Theory (SCET)
with Non-Relativistic QCD (NRQCD) factorization. This approach utilizes Semi-
Inclusive Fragmenting Jet Functions (SIFJFs) to systematically resum large loga-
rithmic enhancements, enabling a precise description of...

90. Quarkonium production in light and heavy ion collisions at LHCb

Camilla De Angelis (Istituto Nazionale di Fisica Nucleare)

08/06/2026, 15:45

Quarkonium production in hadronic collisions is a key observable for studying the interaction of heavy quarks with the nuclear medium. In particular, it has long been recognized as a way to infer indirectly the temperature of the medium formed in heavy ion collisions, by comparing the dissociation rate of ground and excited states with different binding energies. The interpretation of...