CLAS Physics Database

Measurement E102M71

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: 1.67 — 1.69 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 0.0 0.021 0.005
-0.4 15.0 0.052 0.021 0.003
0.0 15.0 0.04 0.023 0.008
0.4 15.0 0.025 0.02 0.004
0.8 15.0 0.042 0.03 0.016
-0.8 45.0 0.101 0.036 0.006
-0.4 45.0 0.036 0.022 0.006
0.0 45.0 0.027 0.032 0.002
0.4 45.0 0.027 0.025 0.002
0.8 45.0 0.048 0.031 0.01
-0.8 75.0 0.025 0.028 0.002
-0.4 75.0 0.042 0.033 0.003
0.0 75.0 0.142 0.064 0.012
0.4 75.0 0.041 0.031 0.013
0.8 75.0 -0.008 0.027 0.003
-0.8 105.0 0.02 0.026 0.003
-0.4 105.0 0.001 0.025 0.001
0.0 105.0 -0.045 0.024 0.005
0.4 105.0 0.106 0.054 0.016
0.8 105.0 0.031 0.057 0.016
-0.8 135.0 0.04 0.027 0.003
0.0 135.0 0.03 0.075 0.015
0.4 135.0 0.011 0.055 0.025
0.8 135.0 -0.017 0.024 0.008
-0.8 165.0 0.061 0.029 0.006
-0.4 165.0 0.037 0.049 0.024
0.8 165.0 0.064 0.053 0.013