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Omega particle



Omega
Classification
Subatomic particle
Fermion
Hadron
Baryon
Hyperon
Omega
Properties
Mass: 2.9814 × 10−27 kg
1.672 43 GeV/c2
Electric Charge: −1.602 176 53(14) × 10−19 C
Spin: 3/2
Quark Composition: 3 Strange

In particle physics, the omega minus) is a type of baryon (more specifically, a hyperon). Its discovery was a great triumph in the study of quark processes, since it was found only after its existence, mass, and decay products had already been predicted. Besides the ordinary omega particle there is also a charmed omega particle, in which a strange quark is replaced by a charm quark. The omega particle decays only via the weak interaction and has therefore a relatively long lifetime.[1]

Omega
Particle Symbol Makeup Rest mass
MeV/c2
S C B Mean lifetime
s
Decays to
Omega Ω- sss 1672 -3 0 0 8.2×10-11 Λ0 + K-
or Ξ0 + π-
charmed Omega Ω0c ssc 2698 -2 +1 0 7×10-14

References

  1. ^ http://hyperphysics.phy-astr.gsu.edu/hbase/particles/omega.html#c1
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Omega_particle". A list of authors is available in Wikipedia.
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