ColorFull: a C++ library for calculations in SU(Nc) color space

Sjödahl, Malin

doi:10.1140/epjc/s10052-015-3417-6

Cited by 28 publications

(28 citation statements)

References 38 publications

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“…These plug-ins can be interfaced either at the level of matrix elements squared (or tree-loop interferences, respectively), or at the level of helicity, colourordered subamplitudes with both trace-and colour flow bases provided within the Matchbox core through adapted versions of the ColorFull [24] and CVolver [25] libraries. 1 While we provide built-in amplitudes for a limited number of processes, the bulk of Standard Model processes can be simulated using external amplitude plug-ins.…”

Section: External Amplitude Providersmentioning

confidence: 99%

Herwig 7.0/Herwig++ 3.0 release note

et al. 2016

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A major new release of the Monte Carlo event generator Herwig++ (version 3.0) is now available. This release marks the end of distinguishing Herwig++ and HER-WIG development and therefore constitutes the first major release of version 7 of the Herwig event generator family. The new version features a number of significant improvements to the event simulation, including: built-in NLO hard process calculation for virtually all Standard Model processes, with matching to both angular-ordered and dipole shower modules via both subtractive (MC@NLO-type) and multiplicative (Powheg-type) algorithms; QED radiation and spin correlations in the angular-ordered shower; a consistent treatment of perturbative uncertainties within the hard process and parton showering. Several of the new features will be covered in detail in accompanying publications, and an update of the manual will follow in due course.

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Section: External Amplitude Providersmentioning

confidence: 99%

Herwig 7.0/Herwig++ 3.0 release note

et al. 2016

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“…All LO MEs are obtained from MadGraph [26] via a dedicated interface. In addition, we use ColorFull [67] for colour correlations. The merging scale for LEP is always ρ = 4 GeV, while for LHC we use ρ = 10 GeV.…”

Section: Simulation Setupmentioning

confidence: 99%

Merging NLO multi-jet calculations with improved unitarization

2018

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We present an algorithm to combine multiple matrix elements at LO and NLO with a parton shower. We build on the unitarized merging paradigm. The inclusion of higher orders and multiplicities reduce the scale uncertainties for observables sensitive to hard emissions, while preserving the features of inclusive quantities. The combination allows further soft and collinear emissions to be predicted by the allorder parton-shower approximation. We inspect the impact of terms that are formally but not parametrically negligible. We present results for a number of collider observables where multiple jets are observed, either on their own or in the presence of additional uncoloured particles. The algorithm is implemented in the event generator Herwig.

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“…Further colour bases and simplifications have been developed to calculate multileg amplitudes efficiently [20, 21]. For event generation bases like Colourflow [20] or Trace [18, 19] bases have the nice feature, that in the large limit ( being the number of colours) the flows or traces can be interpreted as dipole chains/colour lines/strings.…”

Section: Introductionmentioning

confidence: 99%