Neutralino Induced Majorana Neutrino Transition Magnetic Moments

TL;DR

This paper investigates how neutrino-neutralino mixing influences neutrino magnetic moments, finding that pure particle-sparticle loops dominate over bilinear insertions, which are significantly weaker.

Contribution

It provides a comparative analysis showing the dominance of pure loops over bilinear insertions in neutrino magnetic moment calculations within supersymmetric models.

Findings

Pure particle-sparticle loops dominate the neutrino magnetic moment.

Bilinear insertions contribute at least an order of magnitude less.

Neutrino-neutralino mixing effects are subdominant to pure loop contributions.

Abstract

We calculate the effect of neutrino-neutralino mixing on the neutrino magnetic moment and compare it with the contribution of pure particle-sparticle loop. We have found that the dominated mechanism is still the bare loop, and that the bilinear insertions on the external neutrino lines contribute at least one order of magnitude weaker.