Table 8 The spin matrix element $r_{00}^{04}$ and the ratio of cross sections for longitudinally and transversely polarised photons, R = σ _L /σ _T , as a function of W for different values of Q², averaged over the Q² and W bins given in the table. The first uncertainty is statistical, the second systematic.

2–3

2.4

32–55

43

$0.60\pm {0.01}_{-0.02}^{+0.03}$

${1.50}_{-0.06-0.15}^{+0.06+0.21}$

2–3

2.4

55–75

65

$0.60\pm {0.01}_{-0.03}^{+0.05}$

${1.50}_{-0.06-0.17}^{+0.06+0.35}$

2–3

2.4

75–110

91

$0.59\pm {0.01}_{-0.04}^{+0.04}$

${1.43}_{-0.06-0.23}^{+0.06+0.23}$

3–7

4.2

32–60

45

$0.70\pm {0.01}_{-0.01}^{+0.01}$

${2.33}_{-0.09-0.09}^{+0.09+0.13}$

3–7

4.2

60–80

70

$0.69\pm {0.01}_{-0.01}^{+0.02}$

${2.23}_{-0.11-0.10}^{+0.12+0.24}$

3–7

4.2

80–120

99

$0.69\pm {0.01}_{-0.01}^{+0.01}$

${2.23}_{-0.09-0.09}^{+0.10+0.14}$

7–12

8.8

40–70

55

$0.74\pm {0.01}_{-0.02}^{+0.01}$

${2.85}_{-0.22-0.26}^{+0.25+0.23}$

7–12

8.8

70–100

85

$0.76\pm {0.02}_{-0.02}^{+0.01}$

${3.17}_{-0.32-0.28}^{+0.38+0.19}$

7–12

8.8

100–140

120

$0.76\pm {0.02}_{-0.02}^{+0.01}$

${3.17}_{-0.32-0.26}^{+0.38+0.23}$

12–50

18.0

40–70

55

$0.84\pm {0.03}_{-0.01}^{+0.01}$

${5.25}_{-0.84-0.34}^{+1.16+0.54}$

12–50

18.0

70–100

85

$0.82\pm {0.03}_{-0.02}^{+0.01}$

${4.55}_{-0.70-0.43}^{+0.94+0.47}$

12–50

18.0

100–160

130

$0.83\pm {0.02}_{-0.01}^{+0.02}$

${4.88}_{-0.67-0.39}^{+0.87+0.64}$