Journal of High Energy Physics· 2014Q2
The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
- 7,481citations
- Q2SCImago
- 2014year
Short summary
A new computer program, MadGraph5 aMC@NLO, automates the complex calculations of particle interaction probabilities at tree-level and next-to-leading order, including matching to parton shower simulations and merging different multiplicity samples.
AI-generated from the title and abstract; the full text is not read.
Key points
- MadGraph5 aMC@NLO automates tree-level and next-to-leading order cross-section calculations.
- The program integrates parton shower matching and merging of different parton multiplicities.
- Key features include flexibility, high parallelization, and minimal user input.
- Phenomenological applications for the LHC and future colliders are presented.
AI-generated from the title and abstract; the full text is not read.
Abstract
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.
The authors' abstract, as published at the source. Journal of High Energy Physics, 2014 · DOI ↗
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Field: Nuclear and High Energy Physics
Nuclear and High Energy PhysicsPhysics and Astronomy