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 syst. uncert.
-0.8 15.0 0.037 0.025 0.002
-0.4 15.0 0.018 0.023 0.001
0.0 15.0 0.075 0.038 0.005
0.4 15.0 -0.003 0.018 0.001
0.8 15.0 0.037 0.025 0.002
-0.8 45.0 0.03 0.017 0.004
-0.4 45.0 0.024 0.023 0.004
0.0 45.0 0.003 0.029 0.003
0.4 45.0 0.022 0.027 0.004
0.8 45.0 -0.005 0.021 0.014
-0.8 75.0 0.026 0.029 0.002
-0.4 75.0 0.018 0.032 0.004
0.0 75.0 0.007 0.033 0.002
0.4 75.0 0.054 0.029 0.003
0.8 75.0 0.052 0.04 0.003
-0.8 105.0 0.048 0.049 0.009
-0.4 105.0 -0.044 0.027 0.002
0.0 105.0 0.013 0.028 0.002
0.4 105.0 0.117 0.041 0.015
0.8 105.0 0.012 0.044 0.003
-0.8 135.0 0.107 0.063 0.008
-0.4 135.0 0.196 0.23 0.0
0.0 135.0 0.012 0.028 0.002
0.4 135.0 0.053 0.031 0.003
0.8 135.0 -0.041 0.031 0.001
-0.8 165.0 0.01 0.022 0.004
0.8 165.0 -0.016 0.081 0.01