paper

Two-Neutrino Five-Photon Scattering at Low Energies

arXiv:hep-ph/0006165 · doi:10.1103/PhysRevD.63.113006

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 $ν\nubar \to 5 γ$, and $γγ\to ν\nubar + 3 γ$. As a byproduct we derive compact expressions for the -body phase-space integrals for massless particles, including those having non-trivial tensor-structure.

14 pages, plain tex, no figures. Two references added

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