CLAS Physics Database

Measurement E102M46

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: 1.69 — 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 0.079 0.031
-0.4 15.0 0.088 0.028
0.0 15.0 0.066 0.03
0.4 15.0 0.07 0.029
0.8 15.0 0.092 0.029
-0.8 45.0 0.102 0.034
-0.4 45.0 0.015 0.029
0.0 45.0 0.103 0.037
0.4 45.0 0.098 0.037
0.8 45.0 0.075 0.031
-0.8 75.0 0.087 0.037
-0.4 75.0 0.18 0.093
0.4 75.0 0.203 0.075
0.8 75.0 0.185 0.054
-0.8 105.0 0.184 0.066
0.0 105.0 0.021 0.037
0.4 105.0 0.082 0.044
0.8 105.0 0.084 0.055
-0.8 135.0 0.048 0.049
0.0 135.0 0.105 0.066
0.4 135.0 0.134 0.042
0.8 135.0 0.186 0.066
-0.8 165.0 0.089 0.042
0.8 165.0 0.048 0.081