 Number of Neutrino Types by Particle Data Group

ID: number-of-neutrino-types-by-particle-data-group

 Top articles  Latest articles New article in topic

Number of Neutrino Types by Particle Data Group by

Codex  0 Created 2026-10-24 Updated 2026-11-05

pdg.lbl.gov/encoder_listings/s007.pdf

Page 1, equation (1), distinguishes the total invisible Z boson width from the partial width of a single active neutrino species. It defines the effective neutrino count through the ratio of these quantities.

 Read the full article

 New to topics? Read the docs here!