Two-Neutrino Five-Photon Scattering at Low Energies
Abstract
We extend earlier constructions of the effective action for neutrino-photon scattering, using the connection between low-energy neutrino-photon and photon-photon scattering together with the known effective Lagrangian describing low-energy photon scattering in QED. We use this effective action to calculate analytic expressions for the low-energy cross section for the (unpolarised) processes 5 γ, γ + 4 γ and γ γ + 3 γ. As a byproduct we derive compact expressions for the N-body phase-space integrals for massless particles, including those having non-trivial tensor-structure.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.