Energy Loss of Charm Quarks in the Quark-Gluon Plasma: Collisional vs Radiative

Munshi G. Mustafa

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Energy Loss of Charm Quarks in the Quark-Gluon Plasma: Collisional vs Radiative

Munshi G. Mustafa

High Energy Physics - Phenomenology · Submitted 29 Dec 2004

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

The authors' main claim For the energy range $E\sim (5-10)$ GeV of charm quark, it is found to be almost same order as that of radiative ones estimated to a first order opacity expansion.

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.30 · human participants 0.01 · controlled comparison 0.28 · randomized assignment 0.01 · states quantitative result 0.96 · compares with prior results 0.92 · mentions code or data availability 0.02.

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arXiv listing abstract v2. Results and the main claim are underlined; show every role.

Considering the collisional energy loss rates of heavy quarks from hard light parton interactions the total energy loss of a charm quark for a static medium has been computed. For the energy range $E\sim (5-10)$ GeV of charm quark, it is found to be almost same order as that of radiative ones estimated to a first order opacity expansion. The collisional energy loss will become much more important for lower energy charm quarks and this feature could be very interesting for phenomenology of hadrons spectra. Using such collisional energy loss rates we estimate the momentum loss distribution employing a Fokker-Planck equation and the total energy loss of a charm quark for an expanding quark-gluon plasma under conditions resembling the RHIC energies. The fractional collisional energy loss is found to be suppressed by a factor of 5 as compared to static case and does not depend linearly on the system size. We also investigate the heavy to light hadrons $D/\pi$ ratio at moderately large (5-10) GeV/$c$ transverse momenta and comment on its enhancement.

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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	Considering the collisional energy loss rates of heavy quarks from hard light parton interactions the total energy loss of a charm quark for a static medium has been computed.	contribution 0.93	0.87	0.08	asserted 1.00
s1	For the energy range $E\sim (5-10)$ GeV of charm quark, it is found to be almost same order as that of radiative ones estimated to a first order opacity expansion.	result 1.00	0.85	0.30	asserted 1.00
s2	The collisional energy loss will become much more important for lower energy charm quarks and this feature could be very interesting for phenomenology of hadrons spectra.	interpretation 0.86	0.67	0.25	hedged possibility 0.75
s3	Using such collisional energy loss rates we estimate the momentum loss distribution employing a Fokker-Planck equation and the total energy loss of a charm quark for an expanding quark-gluon plasma under conditions resembling the RHIC energies.	method 0.70	0.93	0.11	asserted 0.93
s4	The fractional collisional energy loss is found to be suppressed by a factor of 5 as compared to static case and does not depend linearly on the system size.	result 1.00	0.94	0.24	asserted 1.00
s5	We also investigate the heavy to light hadrons $D/\pi$ ratio at moderately large (5-10) GeV/$c$ transverse momenta and comment on its enhancement.	contribution 0.64	0.86	0.10	unclear 0.49

What kind of paper the classifier reports this is: theoretical result 0.67 · evidence from simulation or computation 0.93.

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The paper

Original abstract

Considering the collisional energy loss rates of heavy quarks from hard light parton interactions the total energy loss of a charm quark for a static medium has been computed. For the energy range $E\sim (5-10)$ GeV of charm quark, it is found to be almost same order as that of radiative ones estimated to a first order opacity expansion. The collisional energy loss will become much more important for lower energy charm quarks and this feature could be very interesting for phenomenology of hadrons spectra. Using such collisional energy loss rates we estimate the momentum loss distribution employing a Fokker-Planck equation and the total energy loss of a charm quark for an expanding quark-gluon plasma under conditions resembling the RHIC energies. The fractional collisional energy loss is found to be suppressed by a factor of 5 as compared to static case and does not depend linearly on the system size. We also investigate the heavy to light hadrons $D/\pi$ ratio at moderately large (5-10) GeV/$c$ transverse momenta and comment on its enhancement.

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References

Forward citations

Cited by 12 Pith papers

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

Energy loss of a heavy quark moving through N=4 supersymmetric Yang-Mills plasma
hep-th 2006-05 accept novelty 8.0 of 10

A heavy quark moving through strongly coupled N=4 plasma loses momentum at a rate fixed by temperature and coupling alone, with a friction coefficient independent of the quark's mass.
Heavy-quark thermalization in the quark-gluon plasma via a fractional Langevin equation
nucl-th 2026-10 conditional novelty 7.0 of 10

A fractional Langevin equation with a derived fractional fluctuation-dissipation theorem predicts α-dependent heavy-quark energy loss, nuclear suppression (R_AA), and elliptic flow in the quark-gluon plasma.
Momentum Dependence of Heavy Quark Diffusion in a Thermal Gluonic Plasma on the Lattice
hep-lat 2026-06 unverdicted novelty 7.0 of 10

Lattice simulations of a 3D effective gluonic plasma theory produce the first reported momentum dependence of heavy quark drag and diffusion coefficients in a non-perturbative non-Abelian thermal medium.
Coupled charm and charmonium transport in a strongly coupled quark-gluon plasma
nucl-th 2026-03 conditional novelty 7.0 of 10

A unified T-matrix transport framework for charm-quark diffusion and charmonium kinetics with off-shell spectral functions recovers the statistical equilibrium limit and gives fair LHC charmonium R_AA data.
Bayesian Inference of Heavy-Quark Dissipation and Jet Transport Parameters from D-Meson observables in heavy-ion collisions at the LHC energies
nucl-th 2025-12 unverdicted novelty 7.0 of 10

First simultaneous Bayesian extraction of 2πT D_s and q-hat/T^3 from D-meson R_AA and v2 at 5.02 TeV, yielding a non-monotonic temperature dependence in their ratio that deviates from the expected value of 2.

Show 7 more citing papers

Elastic, Inelastic, and Path Length Fluctuations in Jet Tomography
nucl-th 2005-12 conditional novelty 6.0 of 10

Adding collisional energy loss and geometric path-length fluctuations to radiative jet quenching lowers the predicted non-photonic electron suppression toward RHIC data while keeping pion suppression and the multiplic...
How Much do Heavy Quarks Thermalize in a Heavy Ion Collision?
hep-ph 2004-12 conditional novelty 6.0 of 10

Heavy-quark diffusion in the quark-gluon plasma is computed from perturbative QCD and propagated through a hydrodynamic simulation, yielding charm R_AA and elliptic flow as functions of a single transport coefficient.
Energy Loss of a Heavy Quark in a Collisional Quark-Gluon Plasma
hep-ph 2025-12 unverdicted novelty 5.0 of 10

Including thermal parton collisions via the BGK kernel increases the collisional energy loss of a heavy quark in QGP by ~8% at large velocities for α_s=0.3 compared to the collisionless limit.
Jet energy loss, photon production, and photon-hadron correlations at RHIC
hep-ph 2009-06 conditional novelty 5.0 of 10

Jet-medium interactions, not just direct photon production, are required to account for high-pT photon yields and photon-tagged hadron correlations in Au+Au collisions at RHIC.
Towards an understanding of the RHIC single electron data
hep-ph 2008-02 conditional novelty 5.0 of 10

A running strong coupling plus an HTL-calibrated infrared regulator raises collisional heavy-quark energy loss roughly fivefold, reducing the K factor needed to describe RHIC non-photonic electron R_AA and v_2 from ab...
Elliptic flow and energy loss of heavy quarks in ultra-relativistic heavy ion collisions
hep-ph 2011-04 conditional novelty 4.0 of 10

Elastic heavy-quark scattering in a partonic transport model, even with running coupling and improved Debye screening, falls short of measured elliptic flow and nuclear suppression by a factor of four, which the autho...
Jet Structure in Heavy Ion Collisions
hep-ph 2015-03 conditional novelty 2.0 of 10

The review argues that medium-induced parton branchings are quasi-local and probabilistic, producing a turbulent cascade whose soft gluons carry energy to large angles, with radiative corrections absorbed into a renor...

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31 arXiv papers cite this in 35 sentences

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Papers whose main result relates to this one's

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States a conflicting result 1 paper

We wish to point out through this Comment that some of conceptual and numerical results of the said paper are unreliable.

Comment on the paper "Energy Loss of Charm Quarks in the Quark-Gluon Plasma : Collisional vs Radiative" · 0.80

Papers citing it · 20 sentences without a confident label

Cites it as support 1 paper

It has been shown that collisional energy loss can be safely neglected for small jet radius and moderately high-$p_t$ jets such as the ones considered in this work [ref] .

Dead-cone searches in heavy-ion collisions using the jet tree · Medium · 0.98

Cites it as background 13 papers

The pQCD inspired models include either elastic [ref] or radiative [ref] processes or both [ref] .

Elastic and radiative heavy quark interactions in ultra-relativistic heavy-ion collisions · Introduction · 0.98
A recoil force term due to gluon radiation has been introduced in the Langevin equation for Brownian motion [ref] , and the radiative energy loss has been estimated independently of the collisional energy loss [ref] .

Heavy quark diffusion and radiation at intermediate momentum · Introduction · 0.83
Whether the large elliptic flow and strong suppression is due to collisional or radiative interactions – or both (or even other effects) – is under investigation [ref] .

Elliptic flow and energy loss of heavy quarks in ultra-relativistic heavy ion collisions · Introduction · 0.95

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