CLAS Physics Database

Measurement E102M64

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: 1.53 — 1.55 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 0.278 0.047 0.006
-0.4 15.0 0.324 0.057 0.012
0.0 15.0 0.34 0.055 0.034
0.4 15.0 0.312 0.058 0.008
0.8 15.0 0.244 0.057 0.02
-0.8 45.0 0.289 0.046 0.013
-0.4 45.0 0.272 0.048 0.013
0.0 45.0 0.366 0.059 0.027
0.4 45.0 0.276 0.053 0.016
0.8 45.0 0.362 0.053 0.01
-0.8 75.0 0.248 0.039 0.021
-0.4 75.0 0.187 0.047 0.009
0.0 75.0 0.305 0.055 0.018
0.4 75.0 0.314 0.068 0.016
0.8 75.0 0.302 0.067 0.021
-0.8 105.0 0.2 0.044 0.012
-0.4 105.0 0.306 0.059 0.037
0.0 105.0 0.187 0.058 0.012
0.4 105.0 0.122 0.055 0.02
0.8 105.0 0.222 0.053 0.022
-0.8 135.0 0.236 0.038 0.014
-0.4 135.0 0.257 0.06 0.02
0.0 135.0 0.218 0.059 0.031
0.4 135.0 0.099 0.053 0.013
0.8 135.0 0.192 0.055 0.01
-0.8 165.0 0.206 0.04 0.005
-0.4 165.0 0.167 0.04 0.003
0.0 165.0 0.278 0.055 0.014
0.4 165.0 0.194 0.049 0.017
0.8 165.0 0.213 0.043 0.02