CLAS Physics Database

Measurement E102M31

Experiment: E-89-039
Year: 2007

Measurement comment:

Electron beam energy is 2.567 GeV. Measurements are average of Phi* and 360-Phi*.
Spokespersons: S. Dytman, K. Giovanetti
Reaction: ep → η p
Polarization: none
Quantity: dσ/dΩ
Q2: 1.0 — 1.4 GeV2
W: 1.65 — 1.67 GeV
Publication:
H. Denizli, J. Mueller, S. Dytman, M.L. Leber, R.D. Levine, J. Miles, K.Y. Kim, and CLAS Collaboration Q2 dependence of the S11(1535) Photocoupling and Evidence for a P-wave resonance in η electroproduction //

Slice: cos(θ) = dimensionless

Measurement data
cos(θ) φ, [degree] dσ/dΩ, [μb/sr] uncertainty
-0.9 15.0 0.074 0.035
-0.7 15.0 0.169 0.042
-0.5 15.0 0.19 0.044
-0.3 15.0 0.113 0.036
-0.1 15.0 0.104 0.032
0.1 15.0 0.121 0.048
0.3 15.0 0.026 0.028
0.5 15.0 0.076 0.048
0.7 15.0 -0.057 0.036
0.9 15.0 0.019 0.042
-0.9 45.0 0.121 0.037
-0.7 45.0 0.202 0.056
-0.5 45.0 0.126 0.049
-0.3 45.0 0.08 0.037
-0.1 45.0 0.088 0.044
0.1 45.0 0.128 0.048
0.3 45.0 0.053 0.043
0.5 45.0 0.038 0.048
0.7 45.0 0.091 0.058
0.9 45.0 0.045 0.051
-0.9 75.0 0.094 0.035
-0.7 75.0 0.087 0.051
-0.5 75.0 0.063 0.04
-0.3 75.0 0.133 0.061
-0.1 75.0 0.168 0.052
0.1 75.0 0.011 0.046
0.3 75.0 0.156 0.059
0.5 75.0 -0.02 0.036
0.7 75.0 -0.012 0.049
0.9 75.0 0.125 0.068
-0.9 105.0 0.078 0.042
-0.7 105.0 -0.051 0.071
-0.5 105.0 0.031 0.047
-0.3 105.0 0.072 0.054
-0.1 105.0 0.068 0.051
0.1 105.0 0.088 0.041
0.3 105.0 0.094 0.036
0.5 105.0 0.11 0.041
0.7 105.0 0.105 0.052
0.9 105.0 0.031 0.055
-0.9 135.0 0.204 0.075
-0.5 135.0 0.102 0.1
-0.3 135.0 -0.048 0.047
-0.1 135.0 0.061 0.054
0.1 135.0 0.107 0.054
0.3 135.0 -0.005 0.069
0.5 135.0 0.112 0.058
0.7 135.0 -0.011 0.048
0.9 135.0 -0.042 0.049
-0.9 165.0 0.094 0.05
-0.7 165.0 0.088 0.15
0.9 165.0 0.285 0.264