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baryon

A Dictionary of Astronomy | 1997 | Copyright

baryon Any member of a class of subatomic particles that includes protons and neutrons, as well as numerous others such as the Σ⁺ (sigma-plus) and Ϊ^- (omega-minus) particles. Together with the mesons, baryons form one of the two major classes of subatomic particles, the hadrons. Baryons are composite particles, made up from three quarks, and have a spin of ½. All isolated baryons other than the proton are unstable and decay down to a proton plus other particles. See also Non-baryonic Matter.

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"baryon." A Dictionary of Astronomy. 1997. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>.

"baryon." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O80-baryon.html

"baryon." A Dictionary of Astronomy. 1997. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-baryon.html

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baryon

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

bar·y·on / ˈbarēˌän/ • n. Physics a subatomic particle, such as a nucleon or hyperon, that has a mass equal to or greater than that of a proton. DERIVATIVES: bar·y·on·ic / ˌbarēˈänik/ adj.

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"baryon." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>.

"baryon." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O999-baryon.html

"baryon." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-baryon.html

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hyperon

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

hyperon , class of elementary particles heavier than nucleons ( proton and neutron ). The nucleons and the hyperons together make up the baryon family of particles.

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"hyperon." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-hyperon.html

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hyperon

A Dictionary of Astronomy | 1997 | Copyright

hyperon A baryon that is heavier than a proton or neutron. The term is becoming obsolete.

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"hyperon." A Dictionary of Astronomy. 1997. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>.

"hyperon." A Dictionary of Astronomy. 1997. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O80-hyperon.html

"hyperon." A Dictionary of Astronomy. 1997. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O80-hyperon.html

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