Parity violating observables in radiative neutrino pair emission from metastable atoms

TL;DR

This paper explores how parity-violating effects in radiative neutrino pair emission from metastable atoms can be observed through angular distribution and polarization of emitted photons, aiding neutrino mass spectroscopy.

Contribution

It proposes a novel method to detect parity violation in atomic processes, enabling systematic neutrino mass measurements using atomic emissions.

Findings

Potential to observe asymmetric photon emission patterns.

Detection of circular polarization in emitted photons.

Identification of multiple energy thresholds in the spectrum.

Abstract

We report on a possibility of measuring parity violating effects in radiative neutrino pair emission from metastable atoms; asymmetric angular distribution of emitted photons from oriented atoms and emergent circular polarization. Their observation, along with the continuous photon energy spectrum which has 6 thresholds, may be interpreted as events being a combined weak and QED process, emission of $\gamma \nu_i \nu_j$ in the final state. The method may greatly help to perform neutrino mass spectroscopy using atoms, a systematic determination of the neutrino mass matrix.