A practical seedless infrared-safe cone jet algorithm

Salam, Gavin P.; Soyez, Grégory

doi:10.1088/1126-6708/2007/05/086

Cited by 290 publications

(311 citation statements)

References 42 publications

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“…The Time Projection Chamber (TPC) is used to detect the charged particles [8], while the barrel electromagnetic calorimeter, BEMC, is used for neutral particles. Three jet finders are employed from the fast-jet package [9]: k t , anti-k t and SIS. We select recoil jets with respect to the triggered jets to measure fragmentation functions.…”

Section: Discussionmentioning

confidence: 99%

Strangeness production in jets from p+p \sqrt{s} = 200 GeV collisions

Timmins¹

2010

J. Phys. G: Nucl. Part. Phys.

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Abstract.Measurements of strangeness production in jets help illuminate the QCD mechanisms in fragmentation. Furthermore, they provide a crucial baseline for heavy-ion studies where modifications in jet chemistry have recently been predicted. We present new results on strange particle production in jets from p+p √ s = 200 GeV collisions measured by the STAR experiment. The momentum distributions of the Λ ,Λ and K 0 S particles are obtained using various jet finding algorithms, and then compared to various models. Strange particle ratios in jets are obtained and compared to values obtained from the inclusive spectra. Finally, we show jets tagged with leading strange baryons and mesons, in order to investigate whether gluon or quark jets can be isolated in this way.

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Section: Discussionmentioning

confidence: 99%

Strangeness production in jets from p+p \sqrt{s} = 200 GeV collisions

Timmins¹

2010

J. Phys. G: Nucl. Part. Phys.

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“…Track-jets are defined using the SISCone algorithm [22] as implemented in the FastJet package [23] with a clustering radius R = (∆φ) 2 + (∆η) 2 = 0.5. Charged particles reconstructed in the tracker with p T > 0.5 GeV/c and |η| < 2.5 are used to define the track-jet; this η range is wider than that used for the UE analysis (|η| < 2) in order to avoid a kinematic bias.…”

Section: Methodsmentioning

confidence: 99%

Measurement of the underlying event activity at the LHC with $ \sqrt {s} = 7 $ TeV and comparison with $ \sqrt {s} = 0.9 $ TeV

Chatrchyan¹,

Khachatryan²,

Sirunyan³

et al. 2011

J. High Energ. Phys.

131

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Measurement of the underlying event activity at the LHC with √ s = 7 TeV and comparison with √ s = 0.9 TeVThe CMS collaboration E-mail: cms-publication-committee-chair@cern.chAbstract: A measurement of the underlying activity in events with a jet of transverse momentum in the several GeV region is performed in proton-proton collisions at √ s = 0.9 and 7 TeV, using data collected by the CMS experiment at the LHC. The production of charged particles with pseudorapidity |η| < 2 and transverse momentum p T > 0.5 GeV/c is studied in the azimuthal region transverse to that of the leading set of charged particles forming a track-jet. A significant growth of the average multiplicity and scalar-p T sum of the particles in the transverse region is observed with increasing p T of the leading trackjet, followed by a much slower rise above a few GeV/c. For track-jet p T larger than a few GeV/c, the activity in the transverse region is approximately doubled with a centreof-mass energy increase from 0.9 to 7 TeV. Predictions of several QCD-inspired models as implemented in pythia are compared to the data.

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“…The Tevatron data in the plots have been obtained using the infrared-unsafe JETCLU jet algorithm [19]. We cannot use this algorithm in our NLO analysis, so we use the SISCONE [20] algorithm instead.…”

Section: Tevatron Resultsmentioning

confidence: 99%

Multi-jet processes at NLO

Maître¹,

Bern²,

Berger³

et al. 2010

Proceedings of European Physical Society Europhysics Conference on High Energy Physics — PoS(EPS-HEP 2009)

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In this contribution we present results from the NLO computation of the production of a W boson in association with three jets in hadronic collisions. The results are obtained by combining two programs: BlackHat for the virtual one-loop matrix elements and Sherpa for the realemission contributions. We present results for the Tevatron and the LHC, and address the issue of the choice of a common factorization and renormalization scale for this process.

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A practical seedless infrared-safe cone jet algorithm

Cited by 290 publications

References 42 publications

Strangeness production in jets from p+p \sqrt{s} = 200 GeV collisions

Strangeness production in jets from p+p \sqrt{s} = 200 GeV collisions

Measurement of the underlying event activity at the LHC with $ \sqrt {s} = 7 $ TeV and comparison with $ \sqrt {s} = 0.9 $ TeV

Multi-jet processes at NLO

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