A Brief Introduction to Modern Amplitude Methods

2015/09/07 by Lance J. Dixon · 1 voice · 1 citation
Physics and Astronomy · #Particle physics theoretical and experimental studies #Black Holes and Theoretical Physics #Quantum Chromodynamics and Particle Interactions

paper · doi:10.1142/9789814678766_0002

openalex publication_date 2015/09/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

Abstract

I provide a basic introduction to modern helicity amplitude methods, including color organization, the spinor helicity formalism, and factorization properties. I also describe the BCFW (on-shell) recursion relation at tree level, and explain how similar ideas - unitarity and on-shell methods - work at the loop level. These notes are based on lectures delivered at the 2012 CERN Summer School and at TASI 2013.

Citations

• A planar diagram theory for strong interactions
• Calculating Scattering Amplitudes Efficiently
• Scattering Amplitudes

Cited by

• Boosting vector calculus with the graphical notation

Discussions

• So, I'm reading about the spinor helicity formalism. In some references, I see angle brackets referring to left-handed (dotless) spinors. For example, Cheung writes (equation numbers in this post alwa [stackexchange, 1 points]

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