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An -Matrix for Massless Particles
Holmfridur Hannesdottir, Matthew D. Schwartz
The traditional -matrix does not exist for theories with massless particles, such as quantum electrodynamics. The difficulty in isolating asymptotic states manifests itself as i…
Binary JUNIPR: an interpretable probabilistic model for discrimination
Anders Andreassen, Ilya Feige, Christopher Frye +1
JUNIPR is an approach to unsupervised learning in particle physics that scaffolds a probabilistic model for jets around their representation as binary trees. Separate JUNIPR models…
A Finite -Matrix
Holmfridur Hannesdottir, Matthew D. Schwartz
When massless particles are involved, the traditional scattering matrix (-matrix) does not exist: it has no rigorous non-perturbative definition and has infrared divergences in…