CLAS Physics Database

Measurement E102M74

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: 1.73 — 1.75 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 0.03 0.021
-0.4 15.0 0.038 0.027
0.0 15.0 0.023 0.021
0.4 15.0 -0.02 0.022
0.8 15.0 0.031 0.019
-0.8 45.0 0.029 0.026
-0.4 45.0 -0.036 0.022
0.0 45.0 0.011 0.026
0.4 45.0 0.003 0.033
0.8 45.0 -0.002 0.026
-0.8 75.0 0.02 0.029
-0.4 75.0 0.041 0.035
0.0 75.0 0.025 0.023
0.4 75.0 0.042 0.031
0.8 75.0 0.066 0.058
-0.8 105.0 0.041 0.038
-0.4 105.0 0.003 0.044
0.0 105.0 0.008 0.028
0.4 105.0 0.063 0.033
0.8 105.0 0.038 0.029
-0.8 135.0 -0.007 0.055
-0.4 135.0 0.024 0.073
0.0 135.0 -0.012 0.051
0.4 135.0 0.094 0.043
0.8 135.0 0.086 0.046
-0.8 165.0 -0.001 0.026
0.8 165.0 0.131 0.089