CLAS Physics Database

Measurement E102M72

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: 1.69 — 1.71 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
-0.8 15.0 0.084 0.031
-0.4 15.0 0.038 0.032
0.0 15.0 0.033 0.032
0.4 15.0 0.02 0.025
0.8 15.0 0.041 0.023
-0.8 45.0 0.114 0.043
-0.4 45.0 0.024 0.025
0.0 45.0 0.049 0.032
0.4 45.0 0.04 0.041
0.8 45.0 0.04 0.029
-0.8 75.0 0.063 0.027
-0.4 75.0 -0.018 0.044
0.0 75.0 0.016 0.039
0.4 75.0 0.103 0.072
0.8 75.0 0.052 0.037
-0.8 105.0 0.009 0.019
-0.4 105.0 -0.008 0.074
0.0 105.0 -0.015 0.033
0.4 105.0 0.083 0.035
0.8 105.0 0.055 0.042
-0.8 135.0 0.045 0.046
0.0 135.0 0.036 0.05
0.4 135.0 0.064 0.056
0.8 135.0 0.011 0.042
-0.8 165.0 0.083 0.049
0.8 165.0 0.07 0.075