Neutrino pair emission off electrons in a strong electromagnetic wave field

TL;DR

This paper investigates neutrino pair emission from electrons in ultra-intense electromagnetic fields, highlighting non-linear effects, reaction probability convergence, and asymmetries in neutrino production influenced by initial conditions.

Contribution

It provides a detailed analysis of neutrino pair emission in strong laser fields, emphasizing non-linear electrodynamics effects and reaction probability behaviors beyond lowest order perturbation theory.

Findings

Reaction probabilities converge with increasing absorbed photons.

Asymmetry in neutrino production depends on initial wave field conditions.

Expressions for emission rates at high field intensities are derived.

Abstract

The emission of $\nu\bar\nu$ pairs off electrons in a polarized ultra-intense electromagnetic (e.g.\ laser) wave field is analyzed. We elaborate on the significance of non-linear electrodynamics effects (i.e., multi-photon processes) and the peculiarities of neutrino production. Special attention is devoted to the convergence of the reaction probabilities as a function of the number of absorbed photons. Expressions for large field intensities are provided. The asymmetry between the probabilities of electron and $\mu+\tau$ neutrino production depends on initial conditions such as energy of the wave field photons and the field intensity. These findings differ from the lowest order perturbative calculation of the reaction $\gamma + e \to e' + \nu \bar \nu$.