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 syst. uncert.
-0.8 15.0 0.003 0.009 0.001
-0.4 15.0 0.002 0.01 0.001
0.0 15.0 0.001 0.015 0.001
0.4 15.0 0.016 0.025 0.001
0.8 15.0 0.043 0.021 0.007
-0.8 45.0 -0.001 0.009 0.001
-0.4 45.0 -0.007 0.017 0.001
0.0 45.0 0.04 0.027 0.005
0.4 45.0 0.099 0.045 0.018
0.8 45.0 0.051 0.025 0.006
-0.8 75.0 0.007 0.033 0.013
-0.4 75.0 -0.014 0.013 0.002
0.0 75.0 0.039 0.018 0.004
0.4 75.0 0.028 0.015 0.003
0.8 75.0 0.082 0.028 0.007
-0.8 105.0 -0.023 0.035 0.0
-0.4 105.0 0.011 0.018 0.003
0.0 105.0 0.013 0.015 0.001
0.4 105.0 0.058 0.024 0.006
0.8 105.0 0.057 0.022 0.008
-0.8 135.0 0.096 0.062 0.0
-0.4 135.0 0.028 0.022 0.002
0.0 135.0 0.097 0.067 0.009
0.4 135.0 0.052 0.031 0.006
0.8 135.0 0.011 0.018 0.003
0.0 165.0 0.022 0.029 0.008
0.4 165.0 0.103 0.064 0.022
0.8 165.0 0.065 0.061 0.014