Measurements of jet structure and fragmentation from full jet reconstruction in heavy ion collisions at RHIC

Elena Bruna (STAR Collaboration)

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Measurements of jet structure and fragmentation from full jet reconstruction in heavy ion collisions at RHIC

Nuclear Experiment · Submitted 28 Jul 2009

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

The authors' main claim Full jet reconstruction in heavy-ion collisions enables a complete study of the modification of jet structure due to energy loss, but is challenging due to the high-multiplicity environment.

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arXiv ID0907.4788 (version 3)

Pith IDBB4AB2TR, Pith's permanent record of this paper and its review

CitationElena Bruna (STAR Collaboration). "Measurements of jet structure and fragmentation from full jet reconstruction in heavy ion collisions at RHIC." arXiv:0907.4788 (2009). https://pith.science/paper/BB4AB2TR

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What the abstract itself states, as probabilities: claims first 0.05 · states limitation 0.65 · human participants 0.02 · controlled comparison 0.87 · randomized assignment 0.01 · states quantitative result 0.08 · compares with prior results 0.71 · mentions code or data availability 0.02.

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Measurements of inclusive hadron suppression and di-hadron azimuthal correlations have provided important insights into jet quenching in hot QCD matter. However, they do not provide access to the energy of the hard scattering and are limited in their sensitivity since they can be affected by biases toward hard fragmentation and small energy loss. Full jet reconstruction in heavy-ion collisions enables a complete study of the modification of jet structure due to energy loss, but is challenging due to the high-multiplicity environment. We present measurements of fully reconstructed di-jets at mid-rapidity in 200 GeV p+p and central Au+Au collisions performed with the STAR detector. We compare fragmentation functions measured in 200 GeV p+p and central Au+Au collisions and assess the systematic uncertainties of their ratio.

background contribution method result interpretation main claim

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	Measurements of inclusive hadron suppression and di-hadron azimuthal correlations have provided important insights into jet quenching in hot QCD matter.	background 1.00	0.08	0.04	asserted 1.00
s1	However, they do not provide access to the energy of the hard scattering and are limited in their sensitivity since they can be affected by biases toward hard fragmentation and small energy loss.	gap 0.78	0.07	0.04	asserted 0.99
s2	Full jet reconstruction in heavy-ion collisions enables a complete study of the modification of jet structure due to energy loss, but is challenging due to the high-multiplicity environment.	background 0.84	0.08	0.09	asserted 1.00
s3	We present measurements of fully reconstructed di-jets at mid-rapidity in 200 GeV p+p and central Au+Au collisions performed with the STAR detector.	contribution 0.90	0.98	0.10	asserted 1.00
s4	We compare fragmentation functions measured in 200 GeV p+p and central Au+Au collisions and assess the systematic uncertainties of their ratio.	contribution 0.88	0.96	0.11	asserted 0.96

What kind of paper the classifier reports this is: empirical study 1.00 · evidence from observation or experiment 0.99.

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arXiv listing abstract v3

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full text
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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper

Original abstract

Measurements of inclusive hadron suppression and di-hadron azimuthal correlations have provided important insights into jet quenching in hot QCD matter. However, they do not provide access to the energy of the hard scattering and are limited in their sensitivity since they can be affected by biases toward hard fragmentation and small energy loss. Full jet reconstruction in heavy-ion collisions enables a complete study of the modification of jet structure due to energy loss, but is challenging due to the high-multiplicity environment. We present measurements of fully reconstructed di-jets at mid-rapidity in 200 GeV p+p and central Au+Au collisions performed with the STAR detector. We compare fragmentation functions measured in 200 GeV p+p and central Au+Au collisions and assess the systematic uncertainties of their ratio.

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References

Forward citations

Cited by 3 Pith papers

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

Observation and studies of jet quenching in PbPb collisions at nucleon-nucleon center-of-mass energy = 2.76 TeV
nucl-ex 2011-02 accept novelty 6.0 of 10

In central PbPb collisions at 2.76 TeV, dijets become strongly momentum-imbalanced, and the imbalance is carried by low-momentum particles emitted at large angles to the away-side jet.
Jet Quenching via Jet Collimation
hep-ph 2010-12 conditional novelty 5.0 of 10

The ATLAS dijet asymmetry can be explained if the quark-gluon plasma removes soft jet fragments whose energy falls below the medium-induced transverse momentum scale, implying q-hat times path length of order tens of ...
The theory and phenomenology of perturbative QCD based jet quenching
hep-ph 2010-02 conditional novelty 3.0 of 10

The review argues that medium-modified jet showers, especially hadron suppression and correlations, can be used to extract transport coefficients of dense QCD matter within pQCD-based energy-loss formalisms.

How the literature uses it

18 arXiv papers cite this in 25 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 · 17 sentences without a confident label

Uses its data or values 3 papers

The STAR collaboration presented measurement of fragmentation functions in p+p and 0-20% most central Au+Au collisions [ref] .

Jets in heavy ion collisions at RHIC · Di-jet and fragmentation function measurement · 0.86
The ratio of the spectra from the recoil jets in 0-20% central Au+Au to p+p collisions [ref] is presented in Figure [ref].

Jet Reconstruction at RHIC · Results · 0.89
Region-to-region fluctuations are approximated by a Gaussian distribution with $σ=6.5$ GeV/c for $p_T^cut=0.2$ GeV/c [ref] .

Measurements of di-jets in p+p and Au+Au in the STAR experiment · Data sets and analysis · 0.92

Cites it as background 5 papers

The study of the properties of jets and the underlying event in collisions is important for improving our understanding of QCD and the hadronization process, as well as providing a vital baseline for comparison to measurements being performed at RHIC by the STAR and PHENIX collaborations in heavy-ion collisions [ref] .

Underlying Event Studies at RHIC · Introduction · 0.91
Further experimental details can be found in [ref] .

Jets in heavy ion collisions at RHIC · Jet reconstruction algorithms · 0.81
Further experimental details of jet reconstruction measurements utilizing STAR and PHENIX experiments can be found in these proceedings [ref] and from the earlier publications [ref] .

Reconstructed Jets at RHIC · Introduction · 0.93

What it cites · 4 sentences without a confident label

Uses the method or tool of 2 papers

The analysis reported in these proceedings utilizes the “anti-$k_t$” algorithm [ref] , which is a recombination algorithm and part of the FastJet package [ref] .

The Catchment Area of Jets · Experimental techniques and analysis · 1.00
The analysis reported in these proceedings utilizes the “anti-$k_t$” algorithm [ref] , which is a recombination algorithm and part of the FastJet package [ref] .

The anti-k_t jet clustering algorithm · Experimental techniques and analysis · 1.00

Uses data or values from 1 paper

We parameterize the upwards fluctuations of the background by a Gaussian with width $σ$ of the order of 6-7 GeV [ref] .

First fragmentation function measurements from full jet reconstruction in heavy-ion collisions at $\sqrt{s_{_{\rm NN}}}=200$ GeV by STAR · Experimental techniques and analysis · 0.91

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