CLAS Physics Database

Measurement E102M67

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: 1.59 — 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 0.251 0.04 0.027
-0.4 15.0 0.212 0.04 0.023
0.0 15.0 0.241 0.045 0.017
0.4 15.0 0.152 0.038 0.007
0.8 15.0 0.088 0.031 0.013
-0.8 45.0 0.23 0.038 0.004
-0.4 45.0 0.086 0.033 0.013
0.0 45.0 0.173 0.041 0.021
0.4 45.0 0.089 0.035 0.005
0.8 45.0 0.057 0.034 0.013
-0.8 75.0 0.162 0.038 0.029
-0.4 75.0 0.083 0.039 0.019
0.0 75.0 0.131 0.049 0.041
0.4 75.0 0.083 0.044 0.012
0.8 75.0 0.067 0.038 0.005
-0.8 105.0 0.166 0.042 0.019
-0.4 105.0 0.16 0.05 0.035
0.0 105.0 0.108 0.08 0.038
0.4 105.0 0.031 0.094 0.026
0.8 105.0 0.04 0.045 0.009
-0.8 135.0 0.141 0.036 0.01
-0.4 135.0 0.125 0.063 0.02
0.4 135.0 0.058 0.112 0.059
0.8 135.0 0.036 0.05 0.002
-0.8 165.0 0.174 0.036 0.017
-0.4 165.0 0.142 0.042 0.016
0.0 165.0 0.053 0.037 0.014
0.4 165.0 0.015 0.052 0.011
0.8 165.0 0.008 0.035 0.001