Scaling patterns for the suppression of charged hadron yields in Pb+Pb collisions at Root_s = 2.76 TeV: Constraints on transport coefficients

A. Taranenko (Department of Chemistry; J. Jia; J. M. Alexander; N. N. Ajitanand; Roy A. Lacey; Stony Brook University; USA)

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Scaling patterns for the suppression of charged hadron yields in Pb+Pb collisions at Root_s = 2.76 TeV: Constraints on transport coefficients

Roy A. Lacey, N. N. Ajitanand, J. M. Alexander, J. Jia, A. Taranenko (Department of Chemistry, Stony Brook University, USA)

Nuclear Experiment · Submitted 24 Feb 2012

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

The authors' main claim The observed scaling patterns, which are similar to those observed for Au+Au collisions at Root_s = 0.20 TeV at RHIC, show the trends predicted for jet-medium interactions dominated by radiative energy loss.

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arXiv ID1202.5537 (version 1)

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CitationA. Taranenko (Department of Chemistry, J. Jia, J. M. Alexander, N. N. Ajitanand, Roy A. Lacey, Stony Brook University, USA). "Scaling patterns for the suppression of charged hadron yields in Pb+Pb collisions at Root_s = 2.76 TeV: Constraints on transport coefficients." arXiv:1202.5537 (2012). https://pith.science/paper/3P3EJSDG

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.70 · human participants 0.01 · controlled comparison 0.41 · randomized assignment 0.01 · states quantitative result 0.11 · compares with prior results 0.97 · mentions code or data availability 0.02.

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Suppression measurements for charged hadrons are used to investigate the path length (L) and transverse momentum (p_T) dependent jet quenching patterns of the hot and dense QCD medium produced in Pb+Pb collisions at Root_s =2.76 TeV at the LHC. The observed scaling patterns, which are similar to those observed for Au+Au collisions at Root_s = 0.20 TeV at RHIC, show the trends predicted for jet-medium interactions dominated by radiative energy loss. They also allow a simple estimate of the transport coefficient $\hat{q}$, which suggests that the medium produced in LHC collisions is somewhat less opaque than that produced at RHIC, if the same parton-medium coupling strength is assumed. The higher temperature produced in LHC collisions could reduce the parton-medium coupling strength to give identical values for $\hat{q}$ in LHC and RHIC collisions.

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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	Suppression measurements for charged hadrons are used to investigate the path length (L) and transverse momentum (p_T) dependent jet quenching patterns of the hot and dense QCD medium produced in Pb+Pb collisions at Root_s =2.76 TeV at the LHC.	contribution 0.75	0.58	0.06	asserted 1.00
s1	The observed scaling patterns, which are similar to those observed for Au+Au collisions at Root_s = 0.20 TeV at RHIC, show the trends predicted for jet-medium interactions dominated by radiative energy loss.	result 0.62	0.69	0.32	asserted 1.00
s2	They also allow a simple estimate of the transport coefficient $\hat{q}$, which suggests that the medium produced in LHC collisions is somewhat less opaque than that produced at RHIC, if the same parton-medium coupling strength is assumed.	result 0.52	0.82	0.39	hedged possibility 1.00
s3	The higher temperature produced in LHC collisions could reduce the parton-medium coupling strength to give identical values for $\hat{q}$ in LHC and RHIC collisions.	interpretation 1.00	0.24	0.12	hedged possibility 1.00

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The paper

Original abstract

Suppression measurements for charged hadrons are used to investigate the path length (L) and transverse momentum (p_T) dependent jet quenching patterns of the hot and dense QCD medium produced in Pb+Pb collisions at Root_s =2.76 TeV at the LHC. The observed scaling patterns, which are similar to those observed for Au+Au collisions at Root_s = 0.20 TeV at RHIC, show the trends predicted for jet-medium interactions dominated by radiative energy loss. They also allow a simple estimate of the transport coefficient $\hat{q}$, which suggests that the medium produced in LHC collisions is somewhat less opaque than that produced at RHIC, if the same parton-medium coupling strength is assumed. The higher temperature produced in LHC collisions could reduce the parton-medium coupling strength to give identical values for $\hat{q}$ in LHC and RHIC collisions.

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6 arXiv papers cite this in 15 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 · 9 sentences without a confident label

Uses its method or tool 1 paper

To facilitate comparisons to our earlier scaling analysis of $R_AA$ data, we use the transverse size of the system $R̅$ as an estimate for the path length $L$, as was done in our earlier analyses [ref] .

Scaling patterns for azimuthal anisotropy in Pb+Pb collisions at Root_s = 2.76 TeV: Further constraints on transport coefficients · Introduction · 0.84

Compares with it 1 paper

A simple estimate of the transport coefficient $q̂$ from the scaled $v_2$ data, gives a value which is similar to the value obtained in a prior study of the scaling properties of $R_AA$ [ref] .

Scaling patterns for azimuthal anisotropy in Pb+Pb collisions at Root_s = 2.76 TeV: Further constraints on transport coefficients · Introduction · 0.96

Cites it as support 2 papers

Recently multiple indenpendent jet quenching studies (e.g. GLV/WHDG/CUJET, “polytrope” models, geometric models, data scaling analysis, even lattice attempts) [ref] indeed appear to report the coherent message of a less opaque medium at LHC.

Hard Probe of Soft Matter Geometry and Fluctuations from RHIC to LHC · Introduction · 1.00
Consistent messages have been reported recently from a variety of independent jet quenching studies [ref] .

Hard Probe of Geometry and Fluctuations in Heavy Ion Collisions at $\sqrt{s_{_{NN}}}=$ 0.2, 2.76, and 5.5 TeV · Summary and Discussions · 0.97

What it cites · 29 sentences without a confident label

Uses the method or tool of 3 papers

A Monte-Carlo Glauber-based model calculation [ref] was used to evaluate the values for $R̅$ in Pb+Pb collisions as follows.

Glauber Modeling in High Energy Nuclear Collisions · Introduction · 0.94
For these calculations, the initial entropy profile in the transverse plane was assumed to be proportional to a linear combination of the number density of participants and binary collisions [ref] .

Eccentricity fluctuation effects on elliptic flow in relativistic heavy ion collisions · Introduction · 0.93
For these calculations, the initial entropy profile in the transverse plane was assumed to be proportional to a linear combination of the number density of participants and binary collisions [ref] .

Is the quark gluon plasma produced in RHIC collisions strongly coupled? · Introduction · 0.93

Uses data or values from 2 papers

The $R_AA$ measurements employed in our search were recently reported for charged hadrons by the CMS collaboration [ref] .

Study of high-pT charged particle suppression in PbPb compared to pp collisions at sqrt(sNN)=2.76 TeV · Introduction · 1.00
The latter assures that the entropy density weighting used, is constrained by the Pb+Pb hadron multiplicity measurements [ref] .

Dependence on pseudorapidity and centrality of charged hadron production in PbPb collisions at a nucleon-nucleon centre-of-mass energy of 2.76 TeV · Introduction · 0.96

Compares with 8 papers

The fits indicate an intercept $L ≈0.5 ±0.1$ fm (for $ln[R_AA(p_T,L)] = 0$), which is similar to the value $L ≈0.6 ±0.1$ fm observed in RHIC collisions [ref] .

Scaling patterns of the suppression of $\pi^0$ yields in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV: links to the transport properties of the QGP · Introduction · 0.93
However, they are much smaller than the value extracted via the approach of Arnold, Moore and Yaffe (AMY) [ref] and that of Armesto Salgado and Wiedemann (ASW) [ref] .

Radiative jet energy loss in a three-dimensional hydrodynamical medium and high $p_T$ azimuthal asymmetry of $\pi_0$ suppression at mid and forward rapidity at RHIC · Introduction · 0.99
However, they are much smaller than the value extracted via the approach of Arnold, Moore and Yaffe (AMY) [ref] and that of Armesto Salgado and Wiedemann (ASW) [ref] .

Systematic Comparison of Jet Energy-Loss Schemes in a realistic hydrodynamic medium · Introduction · 0.99

Cites as background 1 paper

These scattered partons can interact and lose energy as they traverse the short-lived quark-gluon plasma (QGP), also produced in the collision [ref] .

Multiple Collisions and Induced Gluon Bremsstrahlung in QCD · Introduction · 0.96

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