CLAS Physics Database

Measurement E102M43

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: 1.63 — 1.65 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 0.191 0.036
-0.4 15.0 0.154 0.028
0.0 15.0 0.088 0.027
0.4 15.0 0.088 0.027
0.8 15.0 0.001 0.021
-0.8 45.0 0.125 0.028
-0.4 45.0 0.112 0.032
0.0 45.0 0.08 0.03
0.4 45.0 0.056 0.029
0.8 45.0 0.028 0.023
-0.8 75.0 0.187 0.034
-0.4 75.0 0.135 0.049
0.8 75.0 -0.059 0.025
-0.8 105.0 0.14 0.035
0.4 105.0 0.034 0.04
0.8 105.0 0.095 0.061
-0.8 135.0 0.098 0.038
0.4 135.0 -0.045 0.055
0.8 135.0 -0.105 0.054
-0.8 165.0 0.133 0.032
-0.4 165.0 0.106 0.048
0.8 165.0 0.1 0.048