290
9. Deep Inelastic Electron–Nucleon Scattering and the Parton Model
-2
10
-3
ω φ
J/ψ
10
ψ(2S)
-4
ρ
ρ
′
Υ
10
Z
σ[mb]
-5
10
-6
10
-7
10
-8
10
1
10
10
2
Υ
10
3
J/ψ
ψ(2S)
Z
10
2
φ
R
ω
10
ρ
′
1
ρ
-1
10
2
1
10
10
√
s [GeV]
FIGURE 9.16
−
The cross section σ for the annihilation process e
+ e → hadrons, and the
ratio R (see equation (9.100)), as a function of cm energy. [Figure reproduced
courtesy Michael Barnett, for the Particle Data Group, from the Review of
Particle Physics, K Nakamura et al. (Particle Data Group) Journal of Physics
G 37 (2010) 075021 IOP Publishing Limited.] (See color plate II.)
FIGURE 9.17
Parton model subprocess in e
+ e
−
→ hadrons.
9. Deep Inelastic Electron–Nucleon Scattering and the Parton Model
-2
10
-3
ω φ
J/ψ
10
ψ(2S)
-4
ρ
ρ
′
Υ
10
Z
σ[mb]
-5
10
-6
10
-7
10
-8
10
1
10
10
2
Υ
10
3
J/ψ
ψ(2S)
Z
10
2
φ
R
ω
10
ρ
′
1
ρ
-1
10
2
1
10
10
√
s [GeV]
FIGURE 9.16
−
The cross section σ for the annihilation process e
+ e → hadrons, and the
ratio R (see equation (9.100)), as a function of cm energy. [Figure reproduced
courtesy Michael Barnett, for the Particle Data Group, from the Review of
Particle Physics, K Nakamura et al. (Particle Data Group) Journal of Physics
G 37 (2010) 075021 IOP Publishing Limited.] (See color plate II.)
FIGURE 9.17
Parton model subprocess in e
+ e
−
→ hadrons.