CLAS Physics Database

Measurement E102M65

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: 1.55 — 1.57 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 0.299 0.045 0.036
-0.4 15.0 0.346 0.048 0.019
0.0 15.0 0.29 0.055 0.022
0.4 15.0 0.252 0.048 0.017
0.8 15.0 0.223 0.05 0.008
-0.8 45.0 0.239 0.043 0.011
-0.4 45.0 0.307 0.051 0.006
0.0 45.0 0.316 0.055 0.007
0.4 45.0 0.145 0.047 0.011
0.8 45.0 0.168 0.044 0.007
-0.8 75.0 0.255 0.046 0.012
-0.4 75.0 0.182 0.046 0.005
0.0 75.0 0.195 0.048 0.015
0.4 75.0 0.187 0.06 0.017
0.8 75.0 0.136 0.047 0.015
-0.8 105.0 0.273 0.051 0.023
-0.4 105.0 0.279 0.057 0.008
0.0 105.0 0.181 0.065 0.026
0.4 105.0 0.272 0.081 0.058
0.8 105.0 0.168 0.054 0.015
-0.8 135.0 0.184 0.038 0.018
-0.4 135.0 0.097 0.049 0.018
0.0 135.0 0.105 0.055 0.028
0.4 135.0 0.326 0.097 0.048
0.8 135.0 0.111 0.048 0.013
-0.8 165.0 0.181 0.035 0.007
-0.4 165.0 0.339 0.052 0.012
0.0 165.0 0.212 0.05 0.021
0.4 165.0 0.262 0.058 0.032
0.8 165.0 0.147 0.044 0.007