Andrew Lifson
Affiliated
I am a PhD student who is interested in spinor helicity, chirality flow, and MadGraph. I am currently researching how to simplify amplitude calculations using a novel graphical representation of the spinor-helicity method, called the chirality-flow method. This method allows to go from helicity/spin-assigned Feynman diagram to Lorentz-invariant spinor inner products almost immediately. I have also spent some time optimising amplitude calculations in MadGraph5_aMC@NLO. In the past I have contributed to a jet substructure calculation (master's project) and implemented maximally helicity violating (MHV) amplitudes in the parton-shower program Vincia (honours project).
Publications
Displaying of publications. Sorted by year, then title.
Simplifying QCD event generation with chirality flow, reference vectors and spin directions
Emil Boman, Andrew Lifson, Malin Sjodahl, Adam Warnerbring, Zenny Wettersten
(2024) Journal of High Energy Physics, 2024
Journal articleOne-loop calculations in the chirality-flow formalism
Andrew Lifson, Malin Sjodahl, Simon Plätzer
(2023)
PreprintImproving colour computations in MadGraph5_aMC@NLO and exploring a 1 / Nc expansion
Andrew Lifson, Olivier Mattelaer
(2022) European Physical Journal C, 82
Journal articleAutomating scattering amplitudes with chirality flow
Andrew Lifson, Malin Sjödahl, Zenny Wettersten
(2022) European Physical Journal C, 82
Journal articleThe Chirality-Flow Formalism for Standard Model Calculations
Joakim Alnefjord, Andrew Lifson, Christian Reuschle, Malin Sjödahl
(2022) Springer Proceedings in Mathematics and Statistics, 396 p.387-394
Conference paperA Brief Look at the Chirality-Flow Formalism for Standard Model Amplitudes
Joakim Alnefjord, Andrew Lifson, Christian Reuschle, Malin Sjodahl
(2021) Proceedings of Science, 397
Conference paperThe chirality-flow formalism for the standard model
Joakim Alnefjord, Andrew Lifson, Christian Reuschle, Malin Sjodahl
(2021) European Physical Journal C, 81
Journal articleThe chirality-flow formalism
Andrew Lifson, Christian Reuschle, Malin Sjodahl
(2020) European Physical Journal C, 80
Journal articleCalculating the primary Lund Jet Plane density
Andrew Lifson, Gavin P. Salam, Grégory Soyez
(2020) Journal of High Energy Physics, 2020
Journal articleIntroducing the chirality-flow formalism
Andrew Lifson, Christian Reuschle, Malin Sjödahl
(2020) Acta Physica Polonica B, 51 p.1547-1557
Journal articleHelicity antenna showers for hadron colliders
Nadine Fischer, Andrew Lifson, Peter Skands
(2017) European Physical Journal C, 77
Journal article