Effects of initial spatial phase in radiative neutrino pair emission

Understand

We study radiative neutrino pair emission in deexcitation process of atoms taking into account coherence effect in a macroscopic target system.

• In the course of preparing the coherent initial state to enhance the rate, a spatial phase factor is imprinted in the macroscopic target.
• It is shown that this initial spatial phase changes the kinematics of the radiative neutrino pair emission.
• We investigate effects of the initial spatial phase in the photon spectrum of the process.