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A brief introduction to modern amplitude methods

4 Pith papers cite this work. Polarity classification is still indexing.

4 Pith papers citing it
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.

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years

2026 3 2025 1

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UNVERDICTED 4

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background 2

representative citing papers

Decaying spin-3/2 dark matter from baryon number violation

hep-ph · 2026-05-07 · unverdicted · novelty 7.0

Non-supersymmetric spin-3/2 dark matter with baryon-violating portals can explain the relic abundance through UV and Boltzmann-suppressed freeze-in, with viable parameter space constrained by indirect detection, direct detection, and LHC monojet searches.

Amplitudes and partial wave unitarity bounds

hep-ph · 2025-04-17 · unverdicted · novelty 6.0

Develops spinor-helicity formalism generalizing partial wave unitarity bounds for multi-particle scattering and spin-2 or higher-spin theories.

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Showing 4 of 4 citing papers.