CLAS Physics Database

Measurement E102M62

Experiment: E-89-039
Year: 2007

Measurement comment:

Electron beam energy is 4.056 GeV. Measurements are average of Phi* and 360-Phi*.
Spokespersons: S. Dytman, K. Giovanetti
Reaction: ep → η p
Polarization: none
Quantity: dσ/dΩ
Q2: 2.1 — 2.9 GeV2
W: 1.49 — 1.51 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 syst. uncert.
-0.8 15.0 0.256 0.05 0.041
-0.4 15.0 0.306 0.052 0.021
0.0 15.0 0.264 0.048 0.028
0.4 15.0 0.285 0.055 0.018
0.8 15.0 0.192 0.047 0.026
-0.8 45.0 0.287 0.049 0.038
-0.4 45.0 0.247 0.049 0.029
0.0 45.0 0.144 0.048 0.018
0.4 45.0 0.174 0.043 0.021
0.8 45.0 0.133 0.051 0.016
-0.8 75.0 0.219 0.043 0.025
-0.4 75.0 0.172 0.038 0.023
0.0 75.0 0.165 0.053 0.021
0.4 75.0 0.145 0.037 0.014
0.8 75.0 0.174 0.048 0.021
-0.8 105.0 0.218 0.039 0.02
-0.4 105.0 0.155 0.036 0.012
0.0 105.0 0.153 0.047 0.011
0.4 105.0 0.116 0.039 0.007
0.8 105.0 0.14 0.042 0.018
-0.8 135.0 0.129 0.034 0.019
-0.4 135.0 0.198 0.044 0.028
0.0 135.0 0.108 0.034 0.011
0.4 135.0 0.148 0.044 0.016
0.8 135.0 0.077 0.036 0.01
-0.8 165.0 0.198 0.039 0.031
-0.4 165.0 0.182 0.039 0.025
0.0 165.0 0.134 0.037 0.026
0.4 165.0 0.166 0.036 0.027
0.8 165.0 0.097 0.033 0.014