CLAS Physics Database

Measurement E102M69

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: 1.63 — 1.65 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 0.08 0.02 0.007
-0.4 15.0 0.055 0.022 0.019
0.0 15.0 0.097 0.028 0.011
0.4 15.0 0.001 0.024 0.003
0.8 15.0 0.039 0.025 0.002
-0.8 45.0 0.081 0.021 0.014
-0.4 45.0 0.055 0.025 0.006
0.0 45.0 0.09 0.03 0.017
0.4 45.0 0.039 0.025 0.004
0.8 45.0 0.039 0.023 0.004
-0.8 75.0 0.052 0.025 0.004
-0.4 75.0 0.082 0.029 0.013
0.0 75.0 0.053 0.043 0.006
0.4 75.0 0.026 0.032 0.01
0.8 75.0 0.021 0.025 0.004
-0.8 105.0 0.087 0.031 0.017
-0.4 105.0 0.011 0.07 0.017
0.0 105.0 0.036 0.064 0.018
0.4 105.0 -0.022 0.059 0.004
0.8 105.0 0.023 0.042 0.026
-0.8 135.0 0.051 0.021 0.005
-0.4 135.0 0.108 0.074 0.022
0.8 135.0 0.111 0.086 0.097
-0.8 165.0 0.113 0.041 0.008
-0.4 165.0 -0.046 0.035 0.003
0.8 165.0 -0.011 0.028 0.006