hadron

hadron
—hadronic /ha dron"ik/, adj.
/had"ron/, n. Physics.
any elementary particle that is subject to the strong interaction. Hadrons are subdivided into baryons and mesons. Cf. quark.
[1962; < Gk hadr(ós) thick, bulky + -ON1]

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Any of the subatomic particles that are built from quarks and thus interact via the strong force.

The hadrons fall into two groups: mesons and baryons. Except for protons and neutrons, which are bound in nuclei, all hadrons have short lives and are produced in high-energy collision of subatomic particles. All hadrons are subject to gravitation; charged hadrons are subject to electromagnetic forces. Some hadrons break up by way of the weak force (as in radioactive decay); others decay via the strong and electromagnetic forces.

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      any member of a class of subatomic particles (subatomic particle) that are built from quarks (quark) and thus react through the agency of the strong force. The hadrons embrace mesons (meson), baryons (baryon) (e.g., protons (proton), neutrons (neutron), and sigma particles), and their many resonances (resonance). All observed subatomic particles are hadrons except for the gauge bosons (boson) of the fundamental interactions (fundamental interaction) and the leptons (lepton). Except for protons and neutrons that are bound in atomic nuclei, all hadrons have short lives and are produced in the high-energy collisions of subatomic particles. The other three basic forces of nature also affect hadron behaviour: all hadrons are subject to gravitation; charged hadrons obey electromagnetic laws; and some hadrons break up by way of the weak force (as in radioactive decay (radioactivity)), while others decay via the strong and the electromagnetic forces.

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Universalium. 2010.

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  • hadron — [ adrɔ̃ ] n. m. • 1965; du gr. hadros « abondant » et de (électr)on ♦ Phys. nucl. Particule à interaction forte (contrairement au lepton), formée de quarks soudés par des gluons, et possédant un spin isotopique. ⇒ particule; gluon, parton, quark …   Encyclopédie Universelle

  • hadron — n. (Physics) any elementary particle that interacts strongly with other particles. [WordNet 1.5] …   The Collaborative International Dictionary of English

  • hádron — s. m. [Física] Partícula composta de quarks unidos por interação forte. • [Brasil] Plural: hádrones ou hádrons.   ‣ Etimologia: francês hadron   ♦ Grafia em Portugal: hadrão …   Dicionário da Língua Portuguesa

  • *hadron — ● hadron nom masculin (grec hadros, fort, et électron) Particule susceptible d interactions fortes. (On distingue les baryons [exemple : le nucléon] et les mésons [exemple : le pion].) …   Encyclopédie Universelle

  • hadron — (n.) 1962, from Gk. hadros thick, bulky, the primary sense, also strong, great; large, well grown, ripe, from PIE root *sa to satisfy. With elementary particle suffix ON (Cf. on). Coined in Russian as adron …   Etymology dictionary

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