The contribution of medium-modified color flow to jet quenching

A. Beraudo; J.G. Milhano; U.A. Wiedemann

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The contribution of medium-modified color flow to jet quenching

A. Beraudo, J.G. Milhano, U.A. Wiedemann

High Energy Physics - Phenomenology · Submitted 19 Apr 2012

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim Moreover, it can increase strongly the yield of soft hadronic fragments from a jet, while the distribution of more energetic hadrons follows naturally the shape of a vacuum-like fragmentation pattern of lower total energy.

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Multiple interactions between parton showers and the surrounding QCD matter are expected to underlie the strong medium-modifications of jet observables in ultra-relativistic heavy ion collisions at RHIC and at the LHC. Here, we note that such jet-medium interactions alter generically and characteristically the color correlations in the parton shower. We characterize these effects in a color-differential calculation of the medium-induced gluon radiation spectrum to first and second order in opacity. By interfacing simple branching histories of medium-modified color flow with the Lund hadronization model, we analyze how the medium modification of color correlations can affect the distribution of hadronic fragments in jets. Importantly, we observe that jet-medium interactions give rise to the medium-induced color decoherence of gluons from the parton shower. Since hadronization respects color flow and since each color singlet in a parton shower is hadronized separately, this medium-induced color decoherence leaves characteristic signatures in the jet fragmentation pattern. In particular, it can contribute to the quenching of leading hadron spectra. Moreover, it can increase strongly the yield of soft hadronic fragments from a jet, while the distribution of more energetic hadrons follows naturally the shape of a vacuum-like fragmentation pattern of lower total energy.

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What the classifier reports for each sentence. The number is the probability it gave the label.
#	sentence	role	the authors' own work	states the main conclusion	strength
s0	Multiple interactions between parton showers and the surrounding QCD matter are expected to underlie the strong medium-modifications of jet observables in ultra-relativistic heavy ion collisions at RHIC and at the LHC.	background 1.00	0.05	0.04	hedged possibility 0.93
s1	Here, we note that such jet-medium interactions alter generically and characteristically the color correlations in the parton shower.	result 0.37	0.37	0.09	asserted 0.91
s2	We characterize these effects in a color-differential calculation of the medium-induced gluon radiation spectrum to first and second order in opacity.	method 0.91	0.94	0.05	asserted 0.98
s3	By interfacing simple branching histories of medium-modified color flow with the Lund hadronization model, we analyze how the medium modification of color correlations can affect the distribution of hadronic fragments in jets.	method 0.94	0.93	0.07	asserted 0.86
s4	Importantly, we observe that jet-medium interactions give rise to the medium-induced color decoherence of gluons from the parton shower.	result 1.00	0.89	0.36	asserted 1.00
s5	Since hadronization respects color flow and since each color singlet in a parton shower is hadronized separately, this medium-induced color decoherence leaves characteristic signatures in the jet fragmentation pattern.	interpretation 0.96	0.53	0.20	asserted 0.93
s6	In particular, it can contribute to the quenching of leading hadron spectra.	result 0.84	0.84	0.19	hedged possibility 0.98
s7	Moreover, it can increase strongly the yield of soft hadronic fragments from a jet, while the distribution of more energetic hadrons follows naturally the shape of a vacuum-like fragmentation pattern of lower total energy.	result 0.98	0.87	0.30	hedged possibility 0.88

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The paper

Original abstract

Multiple interactions between parton showers and the surrounding QCD matter are expected to underlie the strong medium-modifications of jet observables in ultra-relativistic heavy ion collisions at RHIC and at the LHC. Here, we note that such jet-medium interactions alter generically and characteristically the color correlations in the parton shower. We characterize these effects in a color-differential calculation of the medium-induced gluon radiation spectrum to first and second order in opacity. By interfacing simple branching histories of medium-modified color flow with the Lund hadronization model, we analyze how the medium modification of color correlations can affect the distribution of hadronic fragments in jets. Importantly, we observe that jet-medium interactions give rise to the medium-induced color decoherence of gluons from the parton shower. Since hadronization respects color flow and since each color singlet in a parton shower is hadronized separately, this medium-induced color decoherence leaves characteristic signatures in the jet fragmentation pattern. In particular, it can contribute to the quenching of leading hadron spectra. Moreover, it can increase strongly the yield of soft hadronic fragments from a jet, while the distribution of more energetic hadrons follows naturally the shape of a vacuum-like fragmentation pattern of lower total energy.

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References

Forward citations

Cited by 7 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

A Hybrid Strong/Weak Coupling Approach to Jet Quenching
hep-ph 2014-05 conditional novelty 7.0 of 10

With a single fitted parameter, a model combining a perturbative QCD parton shower with holographic strong-coupling energy loss reproduces LHC jet suppression, dijet asymmetry and jet fragmentation ratios, and beats w...
Angular Structure of Jet Quenching Within a Hybrid Strong/Weak Coupling Model
hep-ph 2016-09 conditional novelty 6.0 of 10

Energy loss makes surviving quenched jets narrower than vacuum jets of the same energy, which hides transverse broadening from standard observables, while the plasma wake the jet leaves behind accounts qualitatively f...
A perturbative framework for jet quenching
hep-ph 2012-12 conditional novelty 6.0 of 10

Treating medium-induced radiation as ordinary infrared-regulated QCD scattering dressed by parton showers, with parameters fixed at RHIC, reproduces LHC jet-quenching data without retuning.
Novel tools and observables for jet physics in heavy-ion collisions
hep-ph 2018-08 conditional novelty 5.0 of 10

The Lund splitting plane, combined with Soft Drop grooming, separates where in phase space different jet-quenching models modify jets, and binning inclusive observables by groomed subjet angle sharpens the discrimination.
Predictions for Boson-Jet Observables and Fragmentation Function Ratios from a Hybrid Strong/Weak Coupling Model for Jet Quenching
hep-ph 2015-08 accept novelty 5.0 of 10

A one-parameter hybrid strong/weak coupling jet-quenching model describes current boson-jet data, predicts Run 2 observables, and a new ratio of fragmentation functions separates energy-loss mechanisms.

Show 2 more citing papers

Picturing perturbative parton cascades in QCD matter
hep-ph 2014-07 conditional novelty 4.0 of 10

A parametric phase-space map shows which of vacuum radiation, medium-induced branching, Brownian broadening, and rare hard scattering dominates at each momentum and angle as a jet crosses QCD matter.
Jet physics in heavy-ion collisions
hep-ph 2013-02 accept novelty 3.0 of 10

The review organizes medium-induced jet modification around one transport coefficient, the LPM-suppressed radiation spectrum, and a color-decoherence criterion that separates a vacuum-like jet core from a strongly que...

How the literature uses it

15 arXiv papers cite this in 20 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 16 sentences without a confident label

Uses its method or tool 1 paper

The effects of the modifications of color flow on final hadron distributions are manifest in Fig. [ref], obtained applying the Lund string-fragmentation scheme implemented in PYTHIA 6.4 [ref] to typical partonic configurations arising from the interaction with the medium, sharing the same kinematics but having different color connections [ref] .

Perturbative versus non-perturbative aspects of jet quenching: in-medium breaking of color coherence · Color flow · 0.98

Cites it as support 1 paper

Recent studies show that multiple parton scatterings inside a quark-gluon plasma can in fact change the the color flow of the jet parton shower from that in vacuum [ref] .

Nuclear modification of high-p_T hadron spectra in p+A collisions at LHC · Introduction · 0.97

Cites it as background 2 papers

In Refs. [ref] this mechanism has been discussed for $N=1$ and $N=2$ rescatterings from the point of view of the large-$N_c$ limit using the cluster and LUND hadronization models.

Color randomization of fast gluon-gluon pairs in the quark-gluon plasma · Introduction · 0.80
There are models which say that softening occurs at fragmentation stage due to color dynamics [See e.g. Ref. [ref] ].

Understanding partonic energy loss from measured light charged particles and jets in PbPb collisions at LHC energies · Introduction · 0.87

What it cites · 18 sentences without a confident label

Cites as background 12 papers

Starting with the seminal works of Baier, Dokshitzer, Mueller, Peigné and Schiff (BDMPS) [ref] and Zakharov (Z) [ref] in the 1990s, a large number of parton energy loss calculations aim at formulating and exploring this jet quenching phenomenon in a QCD-based setup (for recent reviews, see [ref] )

Jet Quenching in Heavy Ion Collisions · Introduction · 0.96
Starting with the seminal works of Baier, Dokshitzer, Mueller, Peigné and Schiff (BDMPS) [ref] and Zakharov (Z) [ref] in the 1990s, a large number of parton energy loss calculations aim at formulating and exploring this jet quenching phenomenon in a QCD-based setup (for recent reviews, see [ref] )

Comparison of Jet Quenching Formalisms for a Quark-Gluon Plasma "Brick" · Introduction · 0.96
Starting with the seminal works of Baier, Dokshitzer, Mueller, Peigné and Schiff (BDMPS) [ref] and Zakharov (Z) [ref] in the 1990s, a large number of parton energy loss calculations aim at formulating and exploring this jet quenching phenomenon in a QCD-based setup (for recent reviews, see [ref] )

The theory and phenomenology of perturbative QCD based jet quenching · Introduction · 0.96

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