baryon


baryon
baryonic /bar'ee on"ik/, adj.
/bar"ee on'/, n. Physics.
a proton, neutron, or any elementary particle that decays into a set of particles that includes a proton. Cf. quark model.
[1950-55; < Gk barý(s) heavy + (FERMI)ON]

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Any member of one of two classes of hadrons.

Baryons are heavy subatomic particles made up of three quarks. They are characterized by a baryon number, B, of 1, and have half-integer spin values. Their antiparticles (see antimatter), called antibaryons, have a baryon number of -1. Both protons and neutrons are baryons.

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      any member of one of two classes of hadrons (particles built from quarks (quark) 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. (The other class of hadronic particle is built from a quark and an antiquark and is called a meson.)

      Baryons are characterized by a baryon number, B, of 1. Their antiparticles, called antibaryons, have a baryon number of −1. An atom containing, for example, one proton and one neutron (each with a baryon number of 1) has a baryon number of 2. In addition to their differences in composition, baryons and mesons can be distinguished from one another by spin: the three quarks that make up a baryon can only produce half-integer values, while meson spins always add up to integer values.

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Universalium. 2010.

Look at other dictionaries:

  • Baryon xi — Xi Propriétés générales Classification Baryon Composition 1 quark s, 1 quark u ou d, 1 quark c ou s Propriétés physiques Masse • Ξ0 : 1,315 GeV.c 2 • Ξ …   Wikipédia en Français

  • baryon — [ barjɔ̃ ] n. m. • v. 1959; de bary et (électr)on ♦ Phys. Hadron lourd, particule élémentaire formée de trois quarks. Les baryons comprennent les nucléons et les hypérons. ● baryon nom masculin Nom générique des hadrons de spin demi entier. ●… …   Encyclopédie Universelle

  • baryon — aryon n. 1. 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. Syn: heavy particle. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • baryon — [bar′ē än΄, ber′ē än΄] n. [< Gr barys, heavy (see GRAVE1) + (ELECTR)ON] Particle Physics a subatomic particle that is both a hadron and a fermion, as a nucleon or hyperon: the proton is the baryon with the smallest mass …   English World dictionary

  • Baryon — Baryonen (von altgriechisch βαρύς barýs ‚schwer‘, ‚gewichtig‘)[1] sind stark wechselwirkende Elementarteilchen (also Hadronen) mit halbzahligem Spin (d. h. Fermionen). Baryonen bestehen aus jeweils drei Quarks (bzw. Antibaryonen aus jeweils… …   Deutsch Wikipedia

  • Baryon — Baryons are the family of subatomic particles with a baryon number of 1. The term baryon is usually used to refer to triquarks baryons made of three quarks. Exotic baryons made of four quarks and one antiquark are known as the pentaquarks, but… …   Wikipedia

  • Baryon Xi — Xi Propriétés générales Classification Baryon Composition 1 quark s, 1 quark u ou d, 1 quark c ou s Propriétés physiques Masse • Ξ0 : 1,315 GeV.c 2 • Ξ− …   Wikipédia en Français

  • Baryon — Les huit baryons de spin 1/2 composés uniquement de quarks u, d et s, classés par étrangeté (S) et charge (Q) Un baryon est, en physique des particules, une catégorie de particules, dont les représentants les plus connus sont le proton et le… …   Wikipédia en Français

  • Baryon — barionas statusas T sritis fizika atitikmenys: angl. baryon vok. Baryon, n rus. барион, m pranc. baryon, m …   Fizikos terminų žodynas

  • baryon — barionas statusas T sritis fizika atitikmenys: angl. baryon vok. Baryon, n rus. барион, m pranc. baryon, m …   Fizikos terminų žodynas


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