New limits on neutrino magnetic moments from low energy neutrino data

TL;DR

This paper reviews current experimental bounds on neutrino magnetic moments, emphasizing the role of CP phases and the importance of combining data from various neutrino experiments to improve constraints.

Contribution

It provides a comprehensive review of the limits on Majorana transition neutrino magnetic moments and highlights the significance of CP phases and multiple experimental data sources.

Findings

Borexino provides the most sensitive bounds on TNMMs.

Leptonic CP phases significantly influence constraints on TNMMs.

Combining reactor and accelerator data is essential for probing CP phases.

Abstract

Here we give a brief review on the current bounds on the general Majorana transition neutrino magnetic moments (TNMM) which cover also the conventional neutrino magnetic moments (NMM). Leptonic CP phases play a key role in constraining TNMMs. While the Borexino experiment is the most sensitive to the TNMM magnitudes, one needs complementary information from reactor and accelerator experiments in order to probe the complex CP phases.