Neutrino oscillation processes in quantum field-theoretical approach

TL;DR

This paper demonstrates that neutrino oscillation processes can be accurately described within quantum field theory, showing that the probabilities of electron detection match those predicted by standard methods, using a modified Feynman propagator.

Contribution

It introduces a quantum field-theoretical framework for neutrino oscillations that aligns with standard results, using a modified Feynman propagator approach.

Findings

Electron survival probabilities are consistent with standard predictions.

The approach applies to both charged-current and neutral-current interactions.

Probabilities depend on oscillation distance as expected.

Abstract

It is shown that neutrino oscillation processes can be consistently described in the framework of quantum field theory. Namely, the oscillating electron survival probabilities in experiments with neutrino detection by charged-current and neutral-current interactions are calculated in the quantum field-theoretical approach to neutrino oscillations based on a modification of the Feynman propagator. The approach is most similar to the standard Feynman diagram technique in the momentum representation. It is found that the oscillating distance-dependent probabilities of detecting an electron in experiments with neutrino detection by charged-current and neutral-current interactions exactly coincide with the corresponding probabilities calculated in the standard approach.