CLAS Physics Database

Measurement E102M55

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: 1.87 — 1.89 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 0.007 0.014 0.002
-0.4 15.0 0.001 0.014 0.0
0.0 15.0 0.024 0.022 0.002
0.4 15.0 0.042 0.024 0.002
0.8 15.0 0.052 0.024 0.003
-0.8 45.0 0.017 0.019 0.002
-0.4 45.0 0.073 0.031 0.013
0.0 45.0 0.023 0.023 0.003
0.4 45.0 0.092 0.041 0.022
0.8 45.0 0.064 0.035 0.004
-0.8 75.0 0.002 0.02 0.001
-0.4 75.0 0.045 0.031 0.004
0.0 75.0 0.093 0.041 0.004
0.4 75.0 0.059 0.027 0.007
0.8 75.0 0.103 0.03 0.018
-0.8 105.0 -0.003 0.049 0.001
-0.4 105.0 0.014 0.016 0.001
0.0 105.0 0.099 0.028 0.007
0.4 105.0 0.11 0.03 0.014
0.8 105.0 0.119 0.036 0.007
-0.4 135.0 0.024 0.027 0.003
0.0 135.0 0.035 0.043 0.004
0.8 135.0 0.1 0.078 0.003
-0.8 165.0 -0.025 0.032 0.002