# A QFT-induced phase in neutrino flavour oscillations

## TL;DR

This paper explores how quantum field theory-induced magnetic moments in neutrinos, which depend on their masses, can influence neutrino flavor oscillations in environments with magnetic fields, adding a new phase contribution.

## Contribution

It introduces a novel phase in neutrino flavor oscillations caused by QFT-induced magnetic moments, linking particle properties to environmental effects.

## Key findings

- QFT induces tiny magnetic moments in neutrinos proportional to their masses.
- Magnetic fields can alter neutrino flavor oscillations via these induced magnetic moments.
- A new phase contribution to oscillations is identified, depending on magnetic environment.

## Abstract

In the extended Standard Model of particle physics, each neutrino mass eigenstate is predicted to have a tiny but non vanishing magnetic moment induced by quantum field theoretic corrections. These QFT-induced magnetic momenta depend linearly on masses of the underlying mass eigenstates with a proportionality constant ${3eG_{F}}/{(8\sqrt{2}\pi^{2})} $. As a consequence when neutrinos are embedded in an environment containing magnetic fields the flavour oscillations get a contribution from the induced relative phases.