Numerical evaluation of virtual corrections to multi-jet production in massless QCD

Badger, Simon; Biedermann, Benedikt; Uwer, Peter; Yundin, Valery

doi:10.1016/j.cpc.2013.03.018

Cited by 149 publications

(145 citation statements)

References 129 publications

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“…Recently, however, new automated tools allow the user to generate events at next-to-leading order (NLO) in perturbation theory [46,[61][62][63][64][65]. These tools require not only the input of the tree-level vertices of the model, but in addition the user has to provide all the one-loop ultra-violet counterterms required to renormalize the one-loop amplitude.…”

Section: Discussionmentioning

confidence: 99%

FeynRules 2.0 — A complete toolbox for tree-level phenomenology

Alloul

Christensen

Degrande

et al. 2014

Computer Physics Communications

2,417

1,904

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FeynRules is a Mathematica-based package which addresses the implementation of particle physics models, which are given in the form of a list of fields, parameters and a Lagrangian, into high-energy physics tools. It calculates the underlying Feynman rules and outputs them to a form appropriate for various programs such as CalcHep, FeynArts, MadGraph, Sherpa and Whizard. Since the original version, many new features have been added: support for two-component fermions, spin-3/2 and spin-2 fields, superspace notation and calculations, automatic mass diagonalization, completely general FeynArts output, a new universal FeynRules output interface, a new Whizard interface, automatic 1 → 2 decay width calculation, improved speed and efficiency, new guidelines for validation and a new web-based validation package. With this feature set, FeynRules enables models to go from theory to simulation and comparison with experiment quickly, efficiently and accurately.

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Section: Discussionmentioning

confidence: 99%

FeynRules 2.0 — A complete toolbox for tree-level phenomenology

Alloul

Christensen

Degrande

et al. 2014

Computer Physics Communications

2,417

1,904

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show abstract

“…We use the CT10NNLO [74] set from LHAPDF6 [75] as our default PDFs, together with its default value of α s ðM Z Þ ¼ 0.118. For the tree-level matrix elements, including color and spin-correlations, we interface to NJET [76,77] through the BLHA interface [78,79]. The one-loop matrix elements are instead taken from the POWHEG-BOX [7,73] (with original routines from MCFM [80]).…”

Section: Comparison With Dedicated Perturbative Calculationsmentioning

confidence: 99%

Drell-Yan production atNNLL′+NNLOmatched to parton showers

et al. 2015

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We present results for Drell-Yan production from the GENEVA Monte-Carlo framework. We combine the fully differential next-to-next-to leading order (NNLO) calculation with higher-order resummation in the 0-jettiness resolution variable. The resulting parton-level events are further combined with parton showering and hadronization provided by PYTHIA8. The 0-jettiness resummation is carried out to NNLL 0 , which consistently incorporates all singular virtual and real NNLO corrections. It thus provides a natural perturbative connection between the NNLO calculation and the parton shower regime, including a systematic assessment of perturbative uncertainties. In this way, inclusive observables are correct to NNLO, up to small power corrections in the resolution cutoff. Furthermore, the perturbative accuracy of zero-jetlike resummation variables is significantly improved beyond the parton shower approximation. We provide comparisons with LHC measurements of Drell-Yan production at 7 TeV from ATLAS, CMS, and LHCb. As already observed in e þ e − collisions, for resummation-sensitive observables, the agreement with data is noticeably improved by using a lower value of α s ðM Z Þ ¼ 0.1135.

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“…The results of the measurement are compared to NLO predictions calculated using BlackHat/Sherpa [19] and NJet/Sherpa [20]. They are both fixed-order calculations with no parton shower and no hadronisation.…”

Section: Figurementioning

confidence: 99%

Studies of jet production properties and the strong coupling constant with the ATLAS detector

Starovoitov¹

2016

Proceedings of the European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2015)

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Several aspects of jet production in proton-proton collisions have been measured by the ATLAS Collaboration. The measurements of the jet production cross-sections probe the dynamics of QCD and can constrain the parton proton structure. Cross-sections for inclusive jet, three-jet and four-jet final states are measured differentially in a variety of kinematic variables and for different centre-of-mass energies in proton-proton collisions with the ATLAS detector. Experimental results are compared to expectations based on next-to-leading order QCD calculations as well as to the Monte Carlo simulations. First LHC Run-2 results are also presented. The measurement of the jet-jet transverse energy correlations sensitive to the strong coupling constant is discussed. The momentum-weighted sum of the charges of tracks associated to a jet is sensitive to the electrical charge of the parton initiating the jet. The distribution of the so-called jet charge has been measured in dijet events using proton-proton collision data.

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Numerical evaluation of virtual corrections to multi-jet production in massless QCD

Cited by 149 publications

References 129 publications

FeynRules 2.0 — A complete toolbox for tree-level phenomenology

FeynRules 2.0 — A complete toolbox for tree-level phenomenology

Drell-Yan production atNNLL′+NNLOmatched to parton showers

Studies of jet production properties and the strong coupling constant with the ATLAS detector

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