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baryon
(redirected from Baryons)

   Also found in: Encyclopedia, Wikipedia, Hutchinson 0.03 sec.
bar·y·on  (br-n)
n.
Any of a family of subatomic particles, including the nucleon and hyperon multiplets, that participate in strong interactions, are composed of three quarks, and are generally more massive than mesons. Also called heavy particle. See Table at subatomic particle.

[Greek barus, heavy; see gwer-1 in Indo-European roots + -on1.]

bary·onic adj.

baryon [bar-ree-on]
Noun
an elementary particle that has a mass greater than or equal to that of the proton [Greek barus heavy]

baryon  (br-n)
Any of a family of subatomic particles composed of three quarks or three antiquarks. They are generally more massive than mesons, and interact with each other via the strong force. Baryons form a subclass of hadrons and are subdivided into nucleons and hyperons. Protons and neutrons are baryons. See Table at subatomic particle.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.baryon - any of the elementary particles having a mass equal to or greater than that of a proton and that participate in strong interactions; a hadron with a baryon number of +1
fermion - any particle that obeys Fermi-Dirac statistics and is subject to the Pauli exclusion principle
hadron - any elementary particle that interacts strongly with other particles
hyperon - any baryon that is not a nucleon; unstable particle with mass greater than a neutron
nucleon - a constituent (proton or neutron) of an atomic nucleus

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It calls for still heftier baryons that haven't yet been found.
The isotopic ratios measured in extragalactic gas clouds can be compared to Big Bang Nucleosynthesis calculations in order to place limits on the ratio of baryons to photons in the early universe.
However, the CP-violation found in kaon decays, and incorporated into the Standard Model (SM) via the quark mixing mechanism, is too weak to explain the excess of baryons over antibaryons.
 
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