Longitudinally-invariant k⊥-clustering algorithms for hadron-hadron collisions

Catani, Stefano; Dokshitzer, Yuri L.; Seymour, Michael H.; Webber, B.R.

doi:10.1016/0550-3213(93)90166-m

Cited by 1,227 publications

(1,184 citation statements)

References 38 publications

(45 reference statements)

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“…These studies demonstrated that the k T cluster algorithm [21] in the longitudinally invariant inclusive mode [22] is at present the method to reconstruct jets in ep collisions for which the smallest uncertainties are achieved. Previous analyses were done with jet radius R = 1, where R is the maximum distance in the pseudorapidity (η)-azimuth (φ) plane for particle recombination.…”

Section: Introductionmentioning

confidence: 99%

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Jet-radius dependence of inclusive-jet cross sections in deep inelastic scattering at HERA

Chekanov¹,

Derrick²,

Magill³

et al. 2007

Physics Letters B

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Differential inclusive-jet cross sections have been measured for different jet radii in neutral current deep inelastic ep scattering for boson virtualities Q^2 > 125 GeV^2 with the ZEUS detector at HERA using an integrated luminosity of 81.7 pb^-1. Jets were identified in the Breit frame using the k_T cluster algorithm in the longitudinally inclusive mode for different values of the jet radius R. Differential cross sections are presented as functions of Q^2 and the jet transverse energy, E_T,B^jet. The dependence on R of the inclusive-jet cross section has been measured for Q^2 > 125 and 500 GeV^2 and found to be linear with R in the range studied. Next-to-leading-order QCD calculations give a good description of the measurements for 0.5 <= R <= 1. A value of alpha_s(M_Z) has been extracted from the measurements of the inclusive-jet cross-section dsigma/dQ^2 with R=1 for Q^2 > 500 GeV^2: alpha_s(M_Z) = 0.1207 +-0. AbstractDifferential inclusive-jet cross sections have been measured for different jet radii in neutral current deep inelastic ep scattering for boson virtualities Q 2 > 125 GeV 2 with the ZEUS detector at HERA using an integrated luminosity of 81.7 pb −1 . Jets were identified in the Breit frame using the k T cluster algorithm in the longitudinally inclusive mode for different values of the jet radius R. Differential cross sections are presented as functions of Q 2 and the jet transverse energy, E jet T ,B . The dependence on R of the inclusive-jet cross section has been measured for Q 2 > 125 and 500 GeV 2 and found to be linear with R in the range studied. Next-to-leading-order QCD calculations give a good description of the measurements for 0.5 R 1. A value of α s (M Z ) has been extracted from the measurements of the inclusive-jet cross section dσ/dQ 2 with R = 1 for Q 2 > 500 GeV 2 : α s (M Z ) = 0.1207 ± 0.0014(stat.) +0.0035 −0.0033 (exp.) +0.0022 −0.0023 (th.). The variation of α s with E jet T ,B is in a good agreement with the running of α s as predicted by QCD.

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Section: Introductionmentioning

confidence: 99%

“…20 Now at DESY group FEB, Hamburg, Germany. 21 Also at Institut of Theoretical and Experimental Physics, Moscow, Russia. 22 Also at INP, Cracow, Poland.…”

mentioning

confidence: 99%

Jet-radius dependence of inclusive-jet cross sections in deep inelastic scattering at HERA

Chekanov¹,

Derrick²,

Magill³

et al. 2007

Physics Letters B

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“…Calorimeter energy deposits and tracks not previously identified as electron, photon or muon candidates are used to form combined cluster-track objects, from which the hadronic final state is reconstructed [34,38]. Jets are reconstructed from these combined cluster-track objects using an inclusive k T algorithm [39,40] with a minimum transverse momentum of 4 GeV. The missing transverse momentum P miss T in the event is derived from all detected particles and energy deposits in the event.…”

Section: Particle Identification and Event Reconstructionmentioning

confidence: 99%

Search for single top quark production at HERA

Aaron¹,

Martin²,

Alexa³

et al. 2009

Physics Letters B

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A search for single top quark production is performed in the full e ± p data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb −1 . Decays of top quarks into a b quark and a W boson with subsequent leptonic or hadronic decay of the W are investigated. A multivariate analysis is performed to discriminate top quark production from Standard Model background processes. An upper limit on the top quark production cross section via flavour changing neutral current processes σ(ep → etX) < 0.25 pb is established at 95% CL. Limits on the anomalous coupling κ tuγ are derived.Accepted by Phys. Lett. B

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“…The k T -cluster algorithm known as the Durham jet algorithm [11,12], as implemented in the FastJet package [13], was used for jet reconstruction. It was run in exclusive mode i.e.…”

Section: Jet Selectionmentioning

confidence: 99%

Production of exclusive dijets in diffractive deep inelastic scattering at HERA

Adamczyk¹

2016

Proceedings of XXIII International Workshop on Deep-Inelastic Scattering — PoS(DIS2015)

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Production of exclusive dijets in diffractive deep inelastic e ± p scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 372 pb -1 . The measurement was performed for γ * -p centre-of-mass energies in the range 90 < W < 250 GeV and for photon virtualities Q 2 > 25 GeV 2 . Energy and transverse-energy flows around the jet axis are presented. The cross section is presented as a function of β and φ , where β = x/x IP , x is the Bjorken variable and x IP is the proton fractional longitudinal momentum loss. The angle φ is defined by the γ * -dijet plane and the γ * -e ± plane in the rest frame of the diffractive final state. The φ cross section is measured in bins of β . The results are compared to predictions from models based on different assumptions about the nature of the diffractive exchange.

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Longitudinally-invariant k⊥-clustering algorithms for hadron-hadron collisions

Cited by 1,227 publications

References 38 publications

Jet-radius dependence of inclusive-jet cross sections in deep inelastic scattering at HERA

Jet-radius dependence of inclusive-jet cross sections in deep inelastic scattering at HERA

Search for single top quark production at HERA

Production of exclusive dijets in diffractive deep inelastic scattering at HERA

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