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In particle physics, a baryon is a type of composite subatomic particle, including the proton and the neutron, that contains an odd number of valence quarks, conventionally three. Baryons belong to the hadron family of particles; hadrons are composed of quarks. Baryons are also classified as fermions because they have half-integer spin.
- List of baryons
The best known baryons are protons and neutrons, which make...
- Xi baryon
Xi baryon. The Xi baryons or cascade particles are a family...
- Lambda baryon
Overview. The lambda baryon. Λ0. was first discovered in...
- Baryon number
In particle physics, the baryon number is a strictly...
- List of baryons
The best known baryons are protons and neutrons, which make up most of the mass of the visible matter in the universe, whereas electrons, the other major component of atoms, are leptons. Each baryon has a corresponding antiparticle, known as an antibaryon, in which quarks are replaced by their corresponding antiquarks.
Particle NameSymbolQuark ContentRest Mass ( Mev / C2 )p , p + , N +u u d938.272 0813(58) [a]n , n 0 , N 0u d d939.565 4133(58) [a]u d s1 115.683 ± 0.006charmed lambda [11]u d c2 286.46 ± 0.14Xi baryon. The Xi baryons or cascade particles are a family of subatomic hadron particles which have the symbol Ξ and may have an electric charge ( Q) of +2 e, +1 e, 0, or −1 e, where e is the elementary charge . Like all conventional baryons, Ξ particles contain three quarks.
ParticleSymbolMakeupRest Mass ( Mev / C2 )Xi [14]Ξ0u s s1 314.86 ± 0.20Xi [15]Ξ−d s s1 321.71 ± 0.07Xi resonance [16]Ξ0 (1530)u s s1 531.80 ± 0.32Xi resonance [16]Ξ− (1530)d s s1 535.0 ± 0.6Baryons are composite subatomic particles made of an odd number of valence quarks (at least three quarks). The most familiar baryons are the protons and neutrons which make up most of the visible matter in the universe. Electrons (the other major component of the atom) are leptons.
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Overview. The lambda baryon. Λ0. was first discovered in October 1950, by V. D. Hopper and S. Biswas of the University of Melbourne, as a neutral V particle with a proton as a decay product, thus correctly distinguishing it as a baryon, rather than a meson, [2] i.e. different in kind from the K meson discovered in 1947 by Rochester and Butler ...
baryon, any member of one of two classes of hadrons (particles built from quarks and thus experiencing the strong nuclear force). Baryons are heavy subatomic particles that are made up of three quarks. Both protons and neutrons, as well as other particles, are baryons.
In particle physics, the baryon number is a strictly conserved additive quantum number of a system. It is defined as. where is the number of quarks, and is the number of antiquarks.
