Sneutrino Vacuum Expectation Values and Neutrino Anomalies Through Trilinear R-parity Violation

TL;DR

This paper reanalyzes neutrino masses in supersymmetric models with trilinear R-parity violation, showing they can naturally explain solar and atmospheric neutrino anomalies without extra symmetries.

Contribution

It demonstrates that large mixing and hierarchical neutrino masses emerge naturally in these models without additional assumptions.

Findings

Models can solve neutrino anomalies simultaneously

Large mixing angles arise naturally

Hierarchical neutrino masses are achievable

Abstract

Neutrino mass spectrum is reanalyzed in supersymmetric models with explicit trilinear $R$ violation. Models in this category are argued to provide simultaneous solution to the solar and atmospheric neutrino anomalies. It is shown specifically that large mixing and hierarchical masses needed for the vacuum solution of neutrino anomalies arise naturally in these models without requiring any additional symmetries or hierarchies among the trilinear couplings.