Electron Neutrino

Uncharged elementary lepton associated with the electron, passing through matter almost undisturbed.

Core Principles & Analysis

• Postulated by Wolfgang Pauli in 1930 to conserve energy in beta decay.
• First detected by Reines and Cowan at the Savannah River reactor in 1956.
• The KATRIN experiment limits its effective mass to below 0.45 eV as of 2025.

Specifications & Metrics

• MASS: < 0.8 eV/c²
• SPIN: 1/2
• SYMBOL: νₑ
• PDG ID: S001
• PDG EDITION: PDG 2026
• CHARGE: 0 (neutral)

Open in the Simulator — run this concept live