Macro-coherent radiative emission of neutrino pair between parity-even atomic states

TL;DR

This paper proposes a novel atomic physics method to determine neutrino masses and their nature by using macro-coherent atomic de-excitation, potentially measuring neutrino properties with high precision.

Contribution

It introduces a new scheme leveraging atomic de-excitation between parity-even states for neutrino mass measurement, enabling determination of the smallest neutrino mass and whether neutrinos are Majorana or Dirac.

Findings

Potential to measure neutrino mass down to 1 meV

Method can distinguish Majorana from Dirac neutrinos

Requires coherent excitation of over 1 gram of atoms

Abstract

A new scheme to determine the neutrino mass matrix is proposed using atomic de-excitation between two states of a few eV energy spacing. The determination of the smallest neutrino mass of the order of 1 meV and neutrino mass type, Majorana or Dirac, becomes possible, if one can coherently excite more than 1 gram of atoms using two lasers.