CLAS Physics Database

Measurement E102M41

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: 1.3 — 2.1 GeV2
W: 1.59 — 1.61 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 0.437 0.052 0.025
-0.4 15.0 0.35 0.043 0.059
0.0 15.0 0.245 0.041 0.025
0.4 15.0 0.195 0.039 0.013
0.8 15.0 0.122 0.034 0.014
-0.8 45.0 0.29 0.042 0.021
-0.4 45.0 0.306 0.046 0.048
0.0 45.0 0.34 0.05 0.016
0.4 45.0 0.159 0.038 0.011
0.8 45.0 0.055 0.032 0.003
-0.8 75.0 0.323 0.049 0.009
-0.4 75.0 0.161 0.048 0.025
0.0 75.0 0.343 0.09 0.056
0.4 75.0 0.113 0.073 0.015
0.8 75.0 0.075 0.045 0.011
-0.8 105.0 0.296 0.048 0.033
-0.4 105.0 0.125 0.071 0.026
0.8 105.0 -0.046 0.054 0.004
-0.8 135.0 0.306 0.045 0.021
-0.4 135.0 0.29 0.1 0.034
0.8 135.0 -0.065 0.045 0.012
-0.8 165.0 0.291 0.037 0.021
-0.4 165.0 0.298 0.053 0.029
0.0 165.0 0.258 0.063 0.059
0.4 165.0 0.186 0.081 0.018
0.8 165.0 0.154 0.049 0.022