Baryonic Matter

• Baryonic Matter is composed of Baryons.
  • Strict Definition: Baryonic Matter is composed of Baryons. Protons and Neutrons are Baryons. Electrons are Leptons.
  • Loose Definition: the definition for Baryonic Matter is extended to include Electrons, since electrons are always present in where we find Neutrons and Protons.

Baryon

A Baryon is a subatomic particle that has a mass equal to or greater than that of a proton. Protons, Neutrons and Hyperons. Hyperons are heavier than protons and neutrons, and they are unstable.

For now we are linking here, a page by the Berkeley Cosmology Group about ordinary matter: http://cosmology.berkeley.edu/Education/CosmologyEssays/ordinary.html