Ernest Rutherford - huji.ac.ilold.phys.huji.ac.il/~gron/Teaching/assets/8FoldWay.pdf · Ernest Rutherford Proposed the neutron James Chadwick Discovered the Neutron. B Field into
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Ernest RutherfordProposed the neutron
James ChadwickDiscovered the Neutron
B Field into pageLead plate in center -> Energy loss -> mass
Positron Discovery
Hideki Yukawa
Hideki Yukawa
Note missing momentum (neutrino)
First observationof kaon decay to two pions
K+
ππ
π
First observationof kaon decay to three pions
K+
π+
π0→γγ→e+e-e+e-
K+
p
π+
ΛK0 π0→γγ→
e+e-e+e-
Murray Gell-Mann
Yuval Ne’eman
MesonOctet
BaryonOctet
BaryonDecuplet
BNL - J Particle
SLACψ ParticleJ/ψ
Very long lifetime! Signals “new” physics
W - Invariant mass of final hadronic state
Standard Model Conservation Laws
VEM = −α
r
Vs = −43
αs
r+ kr
0.2 0.4 0.6 0.8 1.0 1.2 1.4�2.0
�1.5
�1.0
�0.5
0.0
0.5
1.0
1.5
r �fm�
V�GeV
�
Vs(r) = −43
αs
r+ kr
Fs(r) →����r�1
kr
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