WMAP (w-"map") set as 0.024 the critical energy density described by this term times the square of the dimensionless Hubble parameter, small h.
Overly dense regions in the primordial plasma are surrounded by spherical shells of acoustical oscillations denoted by this term that serve as standard rulers. Sphaleron transitions can convert a fraction of a number denoted capital L into a number named for this term. WMAP (w-"map") set as 0.024 the critical energy density described by this term times the square of the dimensionless Hubble parameter, small h. The abundance of elements due to big bang nucleosynthesis is determined using the eta parameter, the ratio of particles of this type to photons. Only about 4% of the universe's energy density is from matter made of particles of this type, whose creation is the subject of the Sakharov conditions. For 10 points, what type of particles contain three quarks and are exempli ed by protons and neutrons?
Overly dense regions in the primordial plasma are surrounded by spherical shells of acoustical oscillations denoted by this term that serve as standard rulers.
baryonic [accept baryons or baryonic matter; prompt on "normal (matter)"]