CLAS Physics Database

Measurement E102M60

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: 1.97 — 1.99 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 -0.015 0.008
-0.4 15.0 0.001 0.01
0.0 15.0 -0.009 0.019
0.4 15.0 0.074 0.029
0.8 15.0 0.048 0.024
-0.4 45.0 -0.019 0.014
0.0 45.0 0.02 0.036
0.4 45.0 0.078 0.033
0.8 45.0 0.057 0.038
-0.8 75.0 0.011 0.012
-0.4 75.0 0.011 0.015
0.0 75.0 0.039 0.026
0.4 75.0 0.099 0.029
0.8 75.0 0.081 0.025
-0.8 105.0 -0.015 0.014
-0.4 105.0 0.021 0.019
0.0 105.0 0.038 0.019
0.4 105.0 0.083 0.029
0.8 105.0 0.106 0.028
-0.8 135.0 -0.003 0.024
-0.4 135.0 -0.013 0.021
0.0 135.0 -0.039 0.03
0.4 135.0 0.103 0.038
0.8 135.0 0.06 0.026
-0.8 165.0 0.007 0.019
0.0 165.0 0.115 0.116
0.4 165.0 0.127 0.056
0.8 165.0 -0.025 0.078