List of baryons

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Baryon decuplet: Spin=3/2
Baryon decuplet: Spin=3/2
Baryon octet: Spin=1/2
Baryon octet: Spin=1/2
This is a list of baryons. See also quark model.
Note that all have baryon number +1. Antiparticles (not listed) have all quarks changed to antiquarks, and their baryon number, strangeness, charm, and bottomness quantum numbers have their signs flipped.
Baryons
Particle Symbol Makeup Rest mass
MeV/c2		 Spin S C B Mean lifetime
s		 Decays to
Proton p uud 938.3 1/2 0 0 0 Stable[1] Unobserved
Neutron n ddu 939.6 1/2 0 0 0 885.7±0.8[2] p + e- + νe
Delta Δ++ uuu 1232 3/2 0 0 0 6×10-24 π+ + p
Delta Δ+ uud 1232 3/2 0 0 0 6×10-24 π+ + n
or π0 + p
Delta Δ0 udd 1232 3/2 0 0 0 6×10-24 π0 + n
or π- + p
Delta Δ- ddd 1232 3/2 0 0 0 6×10-24 π- + n
Lambda Λ0 uds 1115.7 1/2 -1 0 0 2.60×10-10 π- + p
or πo + n
charmed Lambda Λ+c udc 2285 1/2 0 +1 0 2.0×10-13
bottom Lambda Λ0b udb 5624 1/2 0 0 -1 1.2×10-12
Sigma Σ+ uus 1189.4 1/2 -1 0 0 0.8×10-10 π0 + p
or π+ + n
Sigma Σ0 uds 1192.5 1/2 -1 0 0 6×10-20 Λ0 + γ
Sigma Σ- dds 1197.4 1/2 -1 0 0 1.5×10-10 π- + n
bottom Sigma Σ+b uub 1/2 0 0 -1 Λ0b + π+
bottom Sigma Σ-b ddb 1/2 0 0 -1 Λ0b + π-
Xi Ξ0 uss 1315 1/2 -2 0 0 2.9×10-10 Λ0 + π0
Xi Ξ- dss 1321 1/2 -2 0 0 1.6×10-10 Λ0 + π-
Omega Ω- sss 1672 3/2 -3 0 0 0.82×10-10 Λ0 + K-
or Ξ0 + π-
charmed Omega Ω0c ssc 2698 -2 +1 0 7×10-14
charmed Xi Ξ+c usc 2466 -1 +1 0 4.4×10-13
charmed Xi Ξ0c dsc 2472 -1 +1 0 1.1×10-13

[1]at least 1035 years. See Proton decay.
[2]for free neutrons; in most common nuclei, neutrons are stable.

[edit] See also

[edit] References


Hadrons: Baryons (list) | Mesons (list)

Baryons: Nucleons | Hyperons | Exotic baryons | Pentaquarks
Mesons: Pions | Kaons | Quarkonium | Exotic mesons
Atomic nuclei | Atoms (Periodic table (vertical)) | Molecules
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