CLAS Physics Database

Measurement E102M70

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: 1.65 — 1.67 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 0.07 0.024 0.004
-0.4 15.0 0.023 0.02 0.005
0.0 15.0 0.058 0.027 0.005
0.4 15.0 0.001 0.02 0.002
0.8 15.0 0.09 0.027 0.004
-0.8 45.0 0.036 0.027 0.004
-0.4 45.0 0.048 0.022 0.003
0.0 45.0 0.066 0.035 0.009
0.4 45.0 0.037 0.024 0.003
0.8 45.0 0.027 0.022 0.004
-0.8 75.0 0.091 0.036 0.013
-0.4 75.0 0.068 0.032 0.011
0.0 75.0 0.021 0.026 0.007
0.4 75.0 0.015 0.036 0.012
0.8 75.0 0.03 0.036 0.008
-0.8 105.0 0.079 0.03 0.006
-0.4 105.0 -0.04 0.059 0.01
0.0 105.0 -0.02 0.047 0.009
0.4 105.0 0.016 0.042 0.019
0.8 105.0 0.071 0.04 0.005
-0.8 135.0 0.037 0.027 0.01
0.4 135.0 0.035 0.069 0.017
0.8 135.0 0.012 0.043 0.002
-0.8 165.0 -0.01 0.019 0.001
-0.4 165.0 0.061 0.046 0.001
0.8 165.0 0.032 0.061 0.013