2005 World Year of Physics

Isospin- and SU(3)-Symmetries


*
Structures in Micro Objects
*

Isospin-Multiplets in SU(3)-Supermultiplets
Patterns of the "Eightfold Way"
by Murray Gell-Mann and Yuval Ne'eman, 1961
consolidated with the Quark Model of Hadrons
by Murray Gell-Mann and George Zweig, 1964
Pattern in dependence on the Strangeness (S) and Charge Quantum Number (q)
for the 9 Mesons with Spin 0 (Scalar Mesons):
Octet Representation of the Special Unitary Group SU(3) with
Isospin-Doublet (Ko,K+), -Triplet (pi), -Doublet (K-,K'o), -Singulets (etao),(eta'o)

q=0 q=1
Ko
(ds*)
- K+
(us*)
S=1
/ \ \
pi-
(du*)
pio
(uu*) + (dd*)
etao,eta'o
(uu*) + (dd*) + 2(ss*)
pi+
(ud*)
S=0
\ \ /
K-
(su*)
- K'o
(sd*)
S=-1
q=-1 q=0


Supplement for Charm Quantum Number C = 1:

q=1
F+
(cs*)
S=1
/ \
Do
(cu*)
- D+
(cd*)
S=0
q=0


Supplement for Charm Quantum Number C = 0:

etaco
(cc*)
S=0


Supplement for Charm Quantum Number C = -1:

q=0
D-
(dc*)
- D'o
(uc*)
S=0
\ /
F-
(sc*)
S=-1
q=-1
Pattern in dependence on the Strangeness (S) and Charge Quantum Number (q)
for the 9 Mesons with Spin 1 (Vector Mesons):
Octet Representation of the group SU(3) with
Isospin-Doublet (K*o,K*+), -Triplet (rho), -Doublet (K*-,K'*o), -Singulets (omegao),(Phio)

q=0 q=1
K*o
(ds*)
- K*+
(us*)
S=1
/ \ \
rho-
(du*)
rhoo,omegao
(uu*) + (dd*)
Phio
(ss*)
rho+
(ud*)
S=0
\ \ /
K*-
(su*)
- K'*o
(sd*)
S=-1
q=-1 q=0


Supplement for Charm Quantum Number C = 0:

J/Psio
(cc*)
S=0
Pattern in dependence on the Strangeness (S) and Charge Quantum Number (q)
for the 8 Baryons with Spin 1/2:
Octet Representation of the Special Unitary Group SU(3) with
Isospin-Doublet (N)=(n,p), -Triplet (Sigma), -Doublet (Xi), -Singulet (Lambdao)

q=0 q=1
n
(udd)
- p
(uud)
S=0
/ \ \
Sigma-
(dds)
Sigmao
(uds)
Lambdao
(uds)
Sigma+
(uus)
S=-1
\ \ /
Xi-
(dss)
- Xio
(uss)
S=-2
q=-1 q=0


Supplement for Charm Quantum Number C = 1:

q=1 q=2
C1o
(ddc)
- C1+
(udc)
Lambdac+
(udc)
- C12+
(uuc)
S=0
\ /
So,Ao
(dsc)
S+,A+
(usc)
S=-1
\ /
To
(ssc)
S=-2
q=0


Supplement for Charm Quantum Number C = 2:

q=2
Xd+
(dcc)
- Xu2+
(ucc)
S=0
\ /
Xs+
(scc)
S=-1
q=1
Pattern in dependence on the Strangeness (S) and Charge Quantum Number (q)
for the 10 Baryons with Spin 3/2:
Dekuplet Representation of the group SU(3) with
Isospin-Quartet (Delta), -Triplet (Sigma*), -Doublet (Xi*), -Singulet (Omega-)

q=0 q=1 q=2
Delta-
(ddd)
- Deltao
(udd)
- Delta+
(uud)
- Delta2+
(uuu)
S=0
\ \ \ /
Sigma*-
(dds)
Sigma*o
(uds)
Sigma*+
(uus)
S=-1
\ \ /
Xi*-
(dss)
Xi*o
(uss)
S=-2
\ /
Omega-
(sss)
S=-3
q=-1

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