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Related to Hyperons: kaon, sigma baryon


Any of the baryons that are not nucleons, have a mass greater than that of the neutron, and are not stable.


(General Physics) physics any baryon that is not a nucleon
[C20: from hyper- + -on]


(ˈhaɪ pəˌrɒn)

any baryon with nonzero strangeness, esp. one with a relatively long lifetime.
[1950–55; < Greek hypér + -on1]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hyperon - any baryon that is not a nucleon; unstable particle with mass greater than a neutron
baryon, heavy particle - 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
lambda hyperon, lambda particle - an electrically neutral baryon with isotopic spin 1
References in periodicals archive ?
This is so called "mass-hierarchy" where the saturation value (i.e., 1) of the ratio is achieved earlier for the more massive hyperons species [21].
Such hyper-nuclei, called hyperons, can be created in laboratories but survive only for a short time.
The pp collision at high energy is known to produce $(1405) among other hyperons, as revealed in missing-mass spectra, MM(p[K.sup.+]).
So, fermions can have more porous and voluminous packing of boson threads, forming hyperons, etc.
Some theoretical models postulated that, in addition to neutrons, such stars also would contain certain other exotic subatomic particles called hyperons or condensates of kaons: these results rule out those ideas.
The resonance particles, all hadrons (see 1952, Kaons and Hyperons), came to be discovered in great numbers until something like 150 had been found.
(Mathematicians spend their time playing with triangles and hexagons; physicists spend their time playing with lambda hyperons and sigma hyperons.)
According to the associated production mechanism only [K.sup.+] mesons are produced by the following two interactions: N + N [right arrow] N + X + [K.sup.+] and [pi] + N [right arrow] X + [K.sup.+], where N is the nucleon and X is either Ahyperons or [XI] hyperons. On the other hand pair production mechanism produces [K.sup.+] and [K.sup.-] according to the interaction given by N + N [right arrow] N + N + [K.sup.+] + [K.sup.-].
In a few cases (hyperons), we mean A the relative mass of the proton [m.sub.p] /[m.sub.e] = 1836.
Among the new particles was a complicated family called hyperons, which resembled neutrons and protons.
Other particles more massive than a proton were eventually discovered and called hyperons. Mesons, nucleons (protons and neutrons), and hyperons were all grouped together as hadrons, from a Greek word meaning "thick" or "strong," since they were all subject to the strong interaction.
Riska, "The spectrum of the nucleons and the strange hyperons and chiral dynamics," Physics Reports, vol.