CLAS Physics Database

Measurement E102M61

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: 1.99 — 2.01 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 0.003 0.009
-0.4 15.0 0.002 0.01
0.0 15.0 0.001 0.015
0.4 15.0 0.016 0.025
0.8 15.0 0.043 0.021
-0.8 45.0 -0.001 0.009
-0.4 45.0 -0.007 0.017
0.0 45.0 0.04 0.027
0.4 45.0 0.099 0.045
0.8 45.0 0.051 0.025
-0.8 75.0 0.007 0.033
-0.4 75.0 -0.014 0.013
0.0 75.0 0.039 0.018
0.4 75.0 0.028 0.015
0.8 75.0 0.082 0.028
-0.8 105.0 -0.023 0.035
-0.4 105.0 0.011 0.018
0.0 105.0 0.013 0.015
0.4 105.0 0.058 0.024
0.8 105.0 0.057 0.022
-0.8 135.0 0.096 0.062
-0.4 135.0 0.028 0.022
0.0 135.0 0.097 0.067
0.4 135.0 0.052 0.031
0.8 135.0 0.011 0.018
0.0 165.0 0.022 0.029
0.4 165.0 0.103 0.064
0.8 165.0 0.065 0.061