Probing medium-induced energy loss with direct jet reconstruction in p+p and Cu+Cu collisions at PHENIX

Yue-Shi Lai (for the PHENIX collaboration)

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Probing medium-induced energy loss with direct jet reconstruction in p+p and Cu+Cu collisions at PHENIX

Yue-Shi Lai (for the PHENIX collaboration)

Nuclear Experiment · Submitted 27 Jul 2009

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

The authors' main claim We show our first results on the measured jet spectra, jet--jet angular correlation in p+p and Cu+Cu collisions.

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arXiv ID0907.4725 (version 2)

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CitationYue-Shi Lai (for the PHENIX collaboration). "Probing medium-induced energy loss with direct jet reconstruction in p+p and Cu+Cu collisions at PHENIX." arXiv:0907.4725 (2009). https://pith.science/paper/AMJSTRPT

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What the abstract itself states, as probabilities: claims first 0.14 · states limitation 0.36 · human participants 0.02 · controlled comparison 0.33 · randomized assignment 0.02 · states quantitative result 0.10 · compares with prior results 0.13 · mentions code or data availability 0.03.

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We present the application of a new jet reconstruction algorithm that uses a Gaussian filter to locate and reconstruct the jet energy to p+p and heavy ion data from the PHENIX detector. This algorithm is combined with a fake jet rejection scheme that provides efficient jet reconstruction with an acceptable fake rate. We show our first results on the measured jet spectra, jet--jet angular correlation in p+p and Cu+Cu collisions.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	We present the application of a new jet reconstruction algorithm that uses a Gaussian filter to locate and reconstruct the jet energy to p+p and heavy ion data from the PHENIX detector.	method 0.64	0.92	0.07	asserted 1.00
s1	This algorithm is combined with a fake jet rejection scheme that provides efficient jet reconstruction with an acceptable fake rate.	method 0.97	0.77	0.06	asserted 1.00
s2	We show our first results on the measured jet spectra, jet--jet angular correlation in p+p and Cu+Cu collisions.	result 0.91	0.96	0.21	asserted 1.00

What kind of paper the classifier reports this is: method or tool 0.78 · evidence from analysis of existing data 0.67.

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The paper

Original abstract

We present the application of a new jet reconstruction algorithm that uses a Gaussian filter to locate and reconstruct the jet energy to p+p and heavy ion data from the PHENIX detector. This algorithm is combined with a fake jet rejection scheme that provides efficient jet reconstruction with an acceptable fake rate. We show our first results on the measured jet spectra, jet--jet angular correlation in p+p and Cu+Cu collisions.

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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

Medium-induced gluon branching
hep-ph 2012-09 conditional novelty 6.0 of 10

The two gluons produced when an energetic gluon splits in a dense QCD medium decohere on the branching timescale, so successive soft emissions can be modeled as independent probabilistic branchings.
The radiation pattern of a QCD antenna in a dense medium
hep-ph 2012-05 conditional novelty 6.0 of 10

A quark-antiquark pair traversing a dense medium radiates coherently below a hard scale set by the larger of the pair's inverse transverse size and the medium saturation scale, and coherence is restored above that scale.
The radiation pattern of a QCD antenna in a dilute medium
hep-ph 2011-12 accept novelty 6.0 of 10

The gluon emission spectrum off a quark-antiquark antenna in a dilute colored medium is governed by the single hard scale max(r_perp^-1, m_D), with soft radiation antiangular-ordered and suppressed above that scale.
An Upgrade Proposal from the PHENIX Collaboration
nucl-ex 2015-01 conditional novelty 5.0 of 10

PHENIX proposes sPHENIX, a 1.5 T solenoid-based jet and Upsilon detector at RHIC, with GEANT 4 projections showing it could measure jet quenching and Upsilon suppression from 20 to 80 GeV.
An effective theory for jet propagation in dense QCD matter: jet broadening and medium-induced bremsstrahlung
hep-ph 2011-03 accept novelty 5.0 of 10

The authors construct SCET_G, derive its Feynman rules in three gauges, verify gauge invariance, recover known jet-broadening and energy-loss kernels in the soft-gluon limit, and extend the bremsstrahlung spectrum bey...

Show 2 more citing papers

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

19 arXiv papers cite this in 26 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 · 15 sentences without a confident label

Uses its method or tool 2 papers

We are therefore using a Gaussian filter as a generalized form of the cone algorithm to reconstruct jets ( [ref] ).

Direct jet reconstruction in p + p and Cu + Cu at PHENIX · Introduction · 0.88
Unfolding based on embedding p+p jets into Cu+Cu events is used to correct jet energy for background effects [ref] .

Jets in heavy ion collisions at RHIC · Heavy ion background · 0.98

Uses its data or values 3 papers

Figures [ref] and [ref] show the inclusive jet cross-sections for various centralities in Cu-Cu collisions [ref] and 0-10$%$ central Au-Au collisions [ref] at $√(s__NN)$ = 200 GeV respectively.

Heavy-Ion Collisions - Examining the Quark Gluon Plasma at RHIC · Jet reconstruction · 0.85
Uncorrected jet spectra reconstructed via a gaussian filtering algorithm in four centrality classes of Cu+Cu collisions at $√(s_NN)=200$ GeV collected by the PHENIX experiment is shown in Figure [ref] [ref] .

Reconstructed Jets at RHIC · Jet Results in Heavy Ion Collisions · 0.98
PHENIX has been able to reconstruct jets in $Cu$-$Cu$ up to 40 GeV [ref] (see Fig. [ref]), whereas STAR has been able to reconstruct jets in both $p$-$p$ and $Au$-$Au$ up to 50 GeV for two different cone radii and also presented the jet $R_AA$.

Jet Medium interactions at Quark Matter 09 · The new waves: Event shapes and Monte-Carlo implementations · 0.86

Compares with it 1 paper

Comparing results presented at this conference from two rather different approaches to the problem [ref] should be very useful for understanding any remaining systematic uncertainties in extracting the jet signal from the background, and for then determining jet modifications in deconfined nuclear matter.

Puzzles, Progress, Prospects: pre-Summary for the Quark Matter 2009 Conference · Towards True Jet Quenching · 0.84

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 · 1 sentence without a confident label

Compares with 1 paper

This leads us to develop a fake rejection strategy that can achieve a stronger level of fake jet suppression than what has been proposed for the LHC (e.g. [ref] ), while preserving a fast rise of efficiency to unity.

Identification and Rejection of Fake Reconstructed Jets From a Fluctuating Heavy Ion Background in ATLAS · Introduction · 0.80

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