Inference finds consistency between a neutrino flavor evolution model and Earth-based solar neutrino measurements
Abstract
We continue examining statistical data assimilation (SDA), an inference methodology, to infer solutions to neutrino flavor evolution, for the first time using real - rather than simulated - data. The model represents neutrinos streaming from the Sun's center and undergoing a Mikheyev-Smirnov-Wolfenstein (MSW) resonance in flavor space, due to the radially-varying electron number density. The model neutrino energies are chosen to correspond to experimental bins in the Sudbury Neutrino Observatory (SNO) and Borexino experiments, which measure electron-flavor survival probability at Earth. The procedure successfully finds consistency between the observed fluxes and the model, if the MSW resonance - that is, flavor evolution due to solar electrons - is included in the dynamical equations representing the model.
Keywords
Cite
@article{arxiv.2210.10884,
title = {Inference finds consistency between a neutrino flavor evolution model and Earth-based solar neutrino measurements},
author = {Caroline Laber-Smith and A. A. Ahmetaj and Eve Armstrong and A. Baha Balantekin and Amol V. Patwardhan and M. Margarette Sanchez and Sherry Wong},
journal= {arXiv preprint arXiv:2210.10884},
year = {2025}
}