CLAS Physics Database

Measurement E102M75

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: 1.75 — 1.77 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 0.037 0.025
-0.4 15.0 0.018 0.023
0.0 15.0 0.075 0.038
0.4 15.0 -0.003 0.018
0.8 15.0 0.037 0.025
-0.8 45.0 0.03 0.017
-0.4 45.0 0.024 0.023
0.0 45.0 0.003 0.029
0.4 45.0 0.022 0.027
0.8 45.0 -0.005 0.021
-0.8 75.0 0.026 0.029
-0.4 75.0 0.018 0.032
0.0 75.0 0.007 0.033
0.4 75.0 0.054 0.029
0.8 75.0 0.052 0.04
-0.8 105.0 0.048 0.049
-0.4 105.0 -0.044 0.027
0.0 105.0 0.013 0.028
0.4 105.0 0.117 0.041
0.8 105.0 0.012 0.044
-0.8 135.0 0.107 0.063
-0.4 135.0 0.196 0.23
0.0 135.0 0.012 0.028
0.4 135.0 0.053 0.031
0.8 135.0 -0.041 0.031
-0.8 165.0 0.01 0.022
0.8 165.0 -0.016 0.081