Particle Zoo

The Standard Model

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Other Baryons

Symbols: Λ, Σ Χ, Δ, ...
Group: fermion, hadron, baryon
Rest mass: 1 - 6 u
Mean lifetime: 10-10 sec and shorter
Spin: 1/2 or 3/2
Other baryons sometimes are created in highly energetic processes, like from cosmic radiation or in particle accelerators. They decay after a short time. One example are the lambda particles Λ, which consist of one up, one down and, the most stable of them, one strange quark. This Λ0 is with a lifetime of 2.6 x 10-10 seconds relatively stable and decays to a proton or a neutron and one pion.



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