32 citations · 79 across the 10 of their papers we have counts for
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Simplifying QCD event generation with chirality flow, reference vectors and spin directions
Emil Boman, Andrew Lifson, Malin Sjodahl +2
The chirality-flow formalism, combined with good choices of gauge reference vectors, simplifies tree-level calculations to the extent that it is often possible to write down amplit…
One-loop calculations in the chirality-flow formalism
Andrew Lifson, Simon Plätzer, Malin Sjodahl
In a few recent papers we introduced the chirality-flow formalism, which was shown to make calculations of tree-level Feynman diagrams simple and transparent. Chirality flow, which…
Improving Colour Computations in MadGraph5_aMC@NLO and Exploring a 1/Nc Expansion
Andrew Lifson, Olivier Mattelaer
In this paper, we present an extension of MadGraph5_aMC@NLO which is able to evaluate tree-level QCD matrix-elements up to (one more particle than before). To achieve this…
The chirality-flow formalism for standard model calculations
Joakim Alnefjord, Andrew Lifson, Christian Reuschle +1
Scattering amplitudes are often split up into their color (su(N)) and kinematic components. Since the su(N) gauge part can be described using flows of color, one may anticipate tha…
Automating scattering amplitudes with chirality flow
Andrew Lifson, Malin Sjodahl, Zenny Wettersten
Recently we introduced the chirality-flow formalism, a method which builds on the spinor-helicity formalism and is inspired by the color-flow idea in QCD. With this formalism, Feyn…
A Brief Look at the Chirality-Flow Formalism for Standard Model Amplitudes
Joakim Alnefjord, Andrew Lifson, Christian Reuschle +1
Inspired by the flow description of su(N) colour calculations, we recently showed how to simplify the spinor-helicity formalism (at the algebra level two copies of complexified su(…
The chirality-flow formalism for the standard model
Joakim Alnefjord, Andrew Lifson, Christian Reuschle +1
In a recent paper we introduced the chirality-flow formalism, a method for simple and transparent calculations of Feynman diagrams based on the left- and right-chiral $\mathrm{sl}(…
Calculating the primary Lund Jet Plane density
Andrew Lifson, Gavin P. Salam, Gregory Soyez
The Lund-jet plane has recently been proposed as a powerful jet substructure tool with a broad range of applications. In this paper, we provide an all-order single logarithmic calc…
The chirality-flow formalism
Andrew Lifson, Christian Reuschle, Malin Sjodahl
We take a fresh look at Feynman diagrams in the spinor-helicity formalism. Focusing on tree-level massless QED and QCD, we develop a new and conceptually simple graphical method fo…
Helicity Antenna Showers for Hadron Colliders
Nadine Fischer, Andrew Lifson, Peter Skands
We present a complete set of helicity-dependent 2->3 antenna functions for QCD initial- and final- state radiation. The functions are implemented in the Vincia shower Monte Carlo f…