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Baryon - Baryonic matter | | Baryon - Baryonic matter: Encyclopedia II - Baryon - Baryonic matter | | Baryonic matter is matter composed mostly of baryons (by mass), which includes atoms of any sort (and thus includes nearly all matter that we may encounter or experience in everyday life, including our bodies). Non-baryonic matter is the fundamental antithesis of such matter, being any sort of matter that is not primarily composed of baryons. This might include such ordinary matter as neutrinos, photons or free electrons; however, it may also include exotic species of non-baryonic dark matter, such as supersymmetric particles, ...
See also:Baryon, Baryon - Baryonic matter | | | Baryon, Baryon - Baryonic matter, List of baryons, Baryon number, Particle physics, Pentaquark, List of particles, Proton decay | | |
| | | Baryon: Encyclopedia II - Baryon - Baryonic matter
Baryon - Baryonic matter
Baryonic matter is matter composed mostly of baryons (by mass), which includes atoms of any sort (and thus includes nearly all matter that we may encounter or experience in everyday life, including our bodies). Non-baryonic matter is the fundamental antithesis of such matter, being any sort of matter that is not primarily composed of baryons. This might include such ordinary matter as neutrinos, photons or free electrons; however, it may also include exotic species of non-baryonic dark matter, such as supersymmetric particles, axions or black holes. The distinction between baryonic and non-baryonic matter is important in cosmology, because Big Bang nucleosynthesis models set tight constraints on the amount of baryonic matter present in the early universe.
The very existence of baryons is also a significant problem in cosmology, since we have assumed that the Big Bang produced a state with equal amounts of baryons and anti-baryons. The process by which baryons come to outnumber their antiparticles is called baryogenesis (in contrast to a process by which leptons account for the predominance of matter over antimatter, leptogenesis).
Other related archivesAtomic nuclei, Atoms, Baryon number, Baryons, Big Bang, Exotic baryons, Exotic mesons, Fermi-Dirac statistics, Greek, Hyperons, Kaons, List of baryons, List of particles, Molecules, Nuclear physics, Nucleons, Particle physics, Pauli exclusion principle, Pentaquark, Pentaquarks, Pions, Proton decay, Quarkonium, annihilate, antithesis, atoms, axions, baryogenesis, black holes, bosons, cosmology, dark matter, electron, electrons, experience, fermions, gamma rays, hadrons, hyperons, leptogenesis, matter, mesons, neutrinos, neutron, nucleons, nucleosynthesis, particle physics, particles, photons, pion, positron, proton, quark model, quarks, strong nuclear force, supersymmetric particles, universe, Δ, Λ, Ξ, Σ, Ω
 Adapted from the Wikipedia article "Baryonic matter", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
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