LEPTO 6.5 — A Monte Carlo generator for deep inelastic lepton-nucleon scattering

Ingelman, G.; Edin, Anders; Rathsman, Johan

doi:10.1016/s0010-4655(96)00157-9

Cited by 456 publications

(440 citation statements)

References 69 publications

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“…The QCD cascade is simulated using the colour-dipole model (CDM) [39] including the leading-order (LO) QCD diagrams as implemented in ARIADNE 4.08 [40] and, alternatively, with the MEPS model of LEPTO 6.5 [41]. The CTEQ5D [42] parameterisations of the proton PDFs were used for these simulations.…”

Section: Monte Carlo Simulationmentioning

confidence: 99%

See 1 more Smart Citation

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: Monte Carlo Simulationmentioning

confidence: 99%

“…40 Also at Max Planck Institute, Munich, Germany, Alexander von Humboldt Research Award. 41 Supported by the German-Israeli Foundation and the Israel Science Foundation. 42 Now at KEK, Tsukuba, Japan.…”

Section: Introductionmentioning

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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“…Implementations of O(α s ) matrix elements complemented by parton showers based on the DGLAP splitting functions are available in the programs LEPTO6.5 [18] and HERWIG5.9 [19]. The factorization and renormalization scales are set to Q 2 .…”

Section: Phenomenological Qcd Modelsmentioning

confidence: 99%

Forward π°-meson production at HERA

Adloff

1999

Physics Letters B

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High transverse momentum π • -mesons have been measured with the H1 detector at HERA in deep-inelastic ep scattering events at low Bjorken-x, down to x ≈ 4·10 −5 . The measurement is performed in a region of small angles with respect to the proton remnant in the laboratory frame of reference, namely the forward region, and corresponds to central rapidity in the centre of mass system of the virtual photon and proton. This region is expected to be particularly sensitive to QCD effects in hadronic final states. Differential cross-sections for inclusive π • -meson production are presented as a function of Bjorken-x and the fourmomentum transfer Q 2 , and as a function of transverse momentum and pseudorapidity. A recent numerical BFKL calculation and predictions from QCD models based on DGLAP parton evolution are compared with the data.

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“…Neutral current DIS events were generated using the Ariadne 4.08 program [33] and the Lepto 6.5 program [34] interfaced to Heracles 4.5.2 [35] via Django 6.2.4 [36]. The Heracles program includes QED effects up to O(α 2 EM ).…”

Section: Monte Carlo Simulationmentioning

confidence: 99%

MULTIJET PRODUCTION IN NEUTRAL CURRENT DEEP INELASTIC SCATTERING AT HERA AND DETERMINATION OF α_s

2005

Int. J. Mod. Phys. A

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Multijet production rates in neutral current deep inelastic scattering have been measured in the range of exchanged boson virtualities 10 < Q 2 < 5000 GeV 2 . The data were taken at the ep collider HERA with centre-of-mass energy √ s = 318 GeV using the ZEUS detector and correspond to an integrated luminosity of 82.2 pb −1 . Jets were identified in the Breit frame using the k T cluster algorithm in the longitudinally invariant inclusive mode. Measurements of differential dijet and trijet cross sections are presented as functions of jet transverse energy (E jet T,B ), pseudorapidity (η jet LAB ) and Q 2 with E jet T,B > 5 GeV and −1 < η jet LAB < 2.5. Nextto-leading-order QCD calculations describe the data well. The value of the strong coupling constant α s (M Z ), determined from the ratio of the trijet to dijet cross sections, is α s (M Z ) = 0.1179 ± 0.0013 (stat.) +0.0028 −0.0046 (exp.) +0.0064 −0.0046 (th.).

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LEPTO 6.5 — A Monte Carlo generator for deep inelastic lepton-nucleon scattering

Cited by 456 publications

References 69 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

Forward π°-meson production at HERA

MULTIJET PRODUCTION IN NEUTRAL CURRENT DEEP INELASTIC SCATTERING AT HERA AND DETERMINATION OF α_s

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LEPTO 6.5 — A Monte Carlo generator for deep inelastic lepton-nucleon scattering

Cited by 456 publications

References 69 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

Forward π°-meson production at HERA

MULTIJET PRODUCTION IN NEUTRAL CURRENT DEEP INELASTIC SCATTERING AT HERA AND DETERMINATION OF αs

Contact Info

Product

Resources

About

MULTIJET PRODUCTION IN NEUTRAL CURRENT DEEP INELASTIC SCATTERING AT HERA AND DETERMINATION OF α_s