1.2
1.2
x f(x)
x f(x)
1
1
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0
0
-4
-3
-2
-1
-4
-3
-2
-1
10
10
10
10
10
10
10
10
x
x
Plate I
Distributions of x times the unpolarized parton distribution functions f (x)
¯
(where f = u V , d V , ¯ d, s, c, b, g) and their associated uncertainties using the
u,
MSTW2008 parametrization (Martin et al. 2009) at a scale μ
2 = 10 GeV
2
and μ
2 = 10, 000 GeV
2 . [Figure reproduced courtesy Michael Barnett, for the
Particle Data Group, from the review of Structure Functions by B F Foster,
A D Martin and M G Vincter, section 16 in the Review of Particle Physics,
K Nakamura et al.(Particle Data Group) Journal of Physics G 37 (2010)
075021, IOP Publishing Limited.] (See figure 9.9 on page 283.)
1.2
x f(x)
x f(x)
1
1
0.8
0.8
0.6
0.6
0.4
0.4
0.2
0.2
0
0
-4
-3
-2
-1
-4
-3
-2
-1
10
10
10
10
10
10
10
10
x
x
Plate I
Distributions of x times the unpolarized parton distribution functions f (x)
¯
(where f = u V , d V , ¯ d, s, c, b, g) and their associated uncertainties using the
u,
MSTW2008 parametrization (Martin et al. 2009) at a scale μ
2 = 10 GeV
2
and μ
2 = 10, 000 GeV
2 . [Figure reproduced courtesy Michael Barnett, for the
Particle Data Group, from the review of Structure Functions by B F Foster,
A D Martin and M G Vincter, section 16 in the Review of Particle Physics,
K Nakamura et al.(Particle Data Group) Journal of Physics G 37 (2010)
075021, IOP Publishing Limited.] (See figure 9.9 on page 283.)