lecture 4 b baryons octets decuplets mesons octets
lecture 4 b
baryons: octets, decuplets mesons: octets triplets?
3
4
Finnegans Wake page 383 ( James Joyce )
Zweig ( unpublished ) 6
Gell-Mann 7
10
11
12
13
14
15
16
s s s 17
18
19
singlet octet triplet
38
39
40
Fritzsch / Gell-Mann 1970 41
current commutators near the light cone are abstracted from the free quark model explains scaling behaviour of cross sections
lecture 5 H. Fritzsch
47
48
s s s 49
53
deep inelastic scattering
55
Richard Taylor, SLAC
Fritzsch / Gell-Mann 1970 58
current commutators near the light cone are abstracted from the free quark model explains scaling behaviour of cross sections
energy-momentum tensor
SPEAR at SLAC in 1972 66
J/PSI e(-) e(+) M= 3. 1 Ge. V
heavy quarks SLAC MIT November 1974 68
Perl Goldhaber Richter 69
Samuel Ting, MIT
charmed quark: charm-anticharm mesons similar to positronium
Crystal Ball
1977: Fermilab muon – pairs => Upsilon meson (ϒ) mass: 9. 46 Ge. V
Leon Lederman 80
Upsilon meson (ϒ) mass: 9. 46 Ge. V b – quark (charge: -1/3 e)
M(b) : ~ 4. 2 Ge. V 83
84
Fermilab
CDF – detector Fermilab 86
FNAL 1995 t m(t): 172 Ge. V b
t-quark: decay very fast – no T-mesons and T-baryons
- Slides: 91
