QCD corrections to triboson production

Lazopoulos, Achilleas; Melnikov, Kirill; Petriello, Frank

doi:10.1103/physrevd.76.014001

Cited by 141 publications

(167 citation statements)

References 44 publications

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“…Second, in this review we did not talk about attempts to design a framework where one-loop computations can be performed by pure numerical methods [33,34,35,36,37,38,39,40,44,41,42,43,44,139]. It will be interesting to see how numerical methods will develop in the future, given the robust seminumerical nature of the OPP approach and recent attempts to automate it [17,124].…”

Section: Discussionmentioning

confidence: 99%

“…In conjunction with two-particle unitarity cuts, Eq. (6.37) can be used to obtain the color decomposition of a quark-loop contribution to one-loop gluon-gluon scattering amplitude 38) where n f is the number of quark flavors. In QCD the full one-loop n-gluon amplitude is the sum of the right hand sides of Eq.…”

Section: 2qq + (N − 2)-gluon Amplitudesmentioning

confidence: 99%

“…As a final remark we note that other approaches to one-loop calculations beyond traditional Passarino-Veltman reduction and generalized unitarity have have been studied in the literature [33,34,35,36,37,38,39,40,41,42,43,44], but we will not discuss them in this review.…”

Section: Introductionmentioning

confidence: 99%

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One-loop calculations in quantum field theory: From Feynman diagrams to unitarity cuts

et al. 2012

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The success of the experimental program at the Tevatron re-inforced the idea that precision physics at hadron colliders is desirable and, indeed, possible. The Tevatron data strongly suggests that one-loop computations in QCD describe hard scattering well. Extrapolating this observation to the LHC, we conclude that knowledge of many short-distance processes at next-to-leading order may be required to describe the physics of hard scattering. While the field of oneloop computations is quite mature, parton multiplicities in hard LHC events are so high that traditional computational techniques become inefficient. Recently new approaches based on unitarity have been developed for calculating one-loop scattering amplitudes in quantum field theory. These methods are especially suitable for the description of multi-particle processes in QCD and are amenable to numerical implementations. We present a systematic pedagogical description of both conceptual and technical aspects of the new methods.

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Section: Discussionmentioning

confidence: 99%

Section: 2qq + (N − 2)-gluon Amplitudesmentioning

confidence: 99%

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One-loop calculations in quantum field theory: From Feynman diagrams to unitarity cuts

et al. 2012

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“…Sample of LO and NLO rates for triple-vector-boson production, possibly within cuts and in association with one jet, at the 13-TeV LHC; we also report the integration errors, and the fractional scale (left) and PDF (right) uncertainties. See [283,358]. The complete set of triple-vector-boson cross sections at the NLO is also available in VBFNLO [244].…”

Section: Jhep07(2014)079mentioning

confidence: 99%

The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations

Alwall

Frederix

Frixione

et al. 2014

J. High Energ. Phys.

6,211

5,572

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We discuss the theoretical bases that underpin the automation of the computations of tree-level and next-to-leading order cross sections, of their matching to parton shower simulations, and of the merging of matched samples that differ by light-parton multiplicities. We present a computer program, MadGraph5 aMC@NLO, capable of handling all these computations -parton-level fixed order, shower-matched, merged -in a unified framework whose defining features are flexibility, high level of parallelisation, and human intervention limited to input physics quantities. We demonstrate the potential of the program by presenting selected phenomenological applications relevant to the LHC and to a 1-TeV e + e − collider. While next-to-leading order results are restricted to QCD corrections to SM processes in the first public version, we show that from the user viewpoint no changes have to be expected in the case of corrections due to any given renormalisable Lagrangian, and that the implementation of these are well under way.

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“…While double gauge-boson production gives access to the triple gauge couplings, triple gauge-boson production processes allow to investigate quartic gauge couplings. The QCD corrections to the production of three heavy gauge bosons have been calculated [1], in some cases including the leptonic decays, and turn out to be fairly large. The corrections to WW γ and ZZγ production at the LHC have also become available recently [2] and are sizeable.…”

Section: Introductionmentioning

confidence: 99%