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arxiv: 1907.04419 · v1 · pith:KIDOQUN7new · submitted 2019-07-09 · ✦ hep-ph · nucl-th

Toward an effective theory of quarkonium production in nuclear matter

Ivan Vitev This is my paper

Pith reviewed 2026-05-25 00:07 UTC · model grok-4.3

classification ✦ hep-ph nucl-th
keywords quarkoniumNRQCDGlauber gluonsnuclear matterquark-gluon plasmaheavy ion collisionsJ/psiUpsilon suppression
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The pith

Generalizing NRQCD with Glauber gluons yields a universal microscopic description of heavy quarkonium in nuclear matter.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper advances a generalization of non-relativistic QCD that adds Glauber gluons to capture quarkonium interactions inside a generic nuclear medium. This framework targets a single set of rules that covers cold nuclear matter, dense hadron gas, and quark-gluon plasma alike. A sympathetic reader would care because the same rules are intended to reproduce the suppression patterns observed in both proton-nucleus and nucleus-nucleus collisions. The work positions the effective theory as a step toward unifying data trends across these environments without separate phase-dependent adjustments.

Core claim

NRQCD with Glauber gluons aims to provide a universal microscopic description of the interaction of heavy quarkonia in a range of phases that include cold nuclear matter, dense hadron gas, and quark-gluon plasma. Such effective field theory is an important step toward understanding the common trends in proton-nucleus and nucleus-nucleus data on quarkonium suppression.

What carries the argument

NRQCD with Glauber gluons, the extension of non-relativistic Quantum Chromodynamics that incorporates medium-induced gluon interactions.

If this is right

  • Suppression trends in proton-nucleus and nucleus-nucleus collisions follow from the same microscopic interactions.
  • Heavy quarkonia interact with the medium through Glauber gluons in both cold and hot phases.
  • A single effective theory replaces separate models for each nuclear environment.
  • Predictions for J/psi and Upsilon states become comparable across fixed-target and collider experiments.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • The framework could be extended to predict specific transverse-momentum or rapidity dependence of suppression that experiments can test directly.
  • Consistency checks with other medium-induced effects in QCD, such as jet quenching, become feasible within the same formalism.
  • If the description holds, measurements at future facilities studying the hadron-gas phase would align with existing cold-matter and QGP results without new parameters.

Load-bearing premise

Glauber gluons can be added to NRQCD in a way that produces one consistent description applying equally to cold nuclear matter, dense hadron gas, and quark-gluon plasma.

What would settle it

Data showing quarkonium suppression ratios that cannot be reproduced across the three phases with a single set of Glauber-gluon parameters in NRQCD.

Figures

Figures reproduced from arXiv: 1907.04419 by Ivan Vitev.

Figure 1
Figure 1. Figure 1: Miklos Gyulassy and Gyorgyi Gyulassy with colleagues and friends at the 13th International Workshop in High pT Physics in the RHIC and LHC Era. 1 [PITH_FULL_IMAGE:figures/full_fig_p002_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: Left: comparison of the suppression of J/ψ (yellow band) evaluated in an energy loss model with coupling between the parton and the medium g = 1.7−1.9 to ATLAS data from √ sNN = 5.02 TeV Pb+Pb collisions at the LHC [16]. Right: the double ratio of ψ(2S) to J/ψ suppression [15] as a measure of the relative significance of QCD matter effects on ground and excited states is compared to energy loss model calcu… view at source ↗
Figure 3
Figure 3. Figure 3: Single Glauber/Coulomb gluon insertion vertex from the Lagrangian LQ−G/C, where the incom￾ing quark caries momentum p µ = mvµ +r µ and the outgoing one carries momentum p 0µ = mvµ +r 0µ . The scalings of the Glauber and Coulomb fields can be established for different sources of scattering in the medium and are presented in [PITH_FULL_IMAGE:figures/full_fig_p005_3.png] view at source ↗
read the original abstract

These proceedings are dedicated to Miklos Gyulassy's 70$^{\rm th}$ birthday. In his long and distinguished career he has made seminal contributions to many areas of heavy ion theory, including early papers on quarkonium phenomenology in fixed-target heavy ion experiments. Theoretical and experimental studies of the $J/\psi$ and $\Upsilon$ states have evolved considerably in the past decades, and I describe a recent generalization of non-relativistic Quantum Chromodynamics to include interactions in a generic nuclear medium. NRQCD with Glauber gluons aims to provide a universal microscopic description of the interaction of heavy quarkonia in a range of phases that include cold nuclear matter, dense hadron gas, and quark-gluon plasma. Such effective field theory is an important step toward understanding the common trends in proton-nucleus and nucleus-nucleus data on quarkonium suppression.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

0 major / 1 minor

Summary. This short proceedings contribution, dedicated to Miklos Gyulassy, motivates a generalization of NRQCD that incorporates Glauber gluons. The stated aim is to construct an effective theory providing a universal microscopic description of heavy quarkonium interactions across cold nuclear matter, dense hadron gas, and quark-gluon plasma, with the goal of explaining common trends in quarkonium suppression data from pA and AA collisions.

Significance. If the proposed extension can be developed with consistent power counting, the resulting framework would offer a valuable unified approach to quarkonium phenomenology in nuclear media, extending earlier work on heavy-ion collisions. The manuscript correctly highlights the potential for a phase-independent description.

minor comments (1)
  1. The abstract states that the author will 'describe a recent generalization,' yet the provided text contains only the motivation and aim without any explicit power counting, operator definitions, or matching conditions.

Simulated Author's Rebuttal

0 responses · 0 unresolved

We thank the referee for reviewing our short proceedings contribution. No specific major comments were provided in the report.

Circularity Check

0 steps flagged

No significant circularity detected

full rationale

The paper is a short proceedings contribution that frames the extension of NRQCD with Glauber gluons as an aim toward a universal description, without presenting completed derivations, power counting, operator matching, equations, or any fitting procedures. No load-bearing steps reduce by construction to inputs, self-citations, or renamed empirical patterns; the text explicitly positions the work as preparatory rather than asserting a finished framework with predictions or uniqueness theorems. The derivation chain is therefore self-contained as a motivational outline with no circular reductions.

Axiom & Free-Parameter Ledger

0 free parameters · 0 axioms · 0 invented entities

Abstract only; no free parameters, axioms, or invented entities are identifiable from the provided text.

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Lean theorems connected to this paper

Citations machine-checked in the Pith Canon. Every link opens the source theorem in the public Lean library.

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Reference graph

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