CLAS Physics Database

Measurement E102M66

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: 1.57 — 1.59 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 0.31 0.05 0.012
-0.4 15.0 0.23 0.039 0.016
0.0 15.0 0.241 0.046 0.017
0.4 15.0 0.233 0.045 0.041
0.8 15.0 0.11 0.041 0.016
-0.8 45.0 0.192 0.037 0.015
-0.4 45.0 0.17 0.035 0.011
0.0 45.0 0.133 0.038 0.016
0.4 45.0 0.188 0.049 0.018
0.8 45.0 0.167 0.043 0.018
-0.8 75.0 0.205 0.042 0.006
-0.4 75.0 0.165 0.044 0.016
0.0 75.0 0.132 0.046 0.007
0.4 75.0 0.074 0.046 0.016
0.8 75.0 0.084 0.038 0.009
-0.8 105.0 0.144 0.035 0.007
-0.4 105.0 0.146 0.052 0.014
0.0 105.0 0.116 0.062 0.02
0.4 105.0 0.181 0.09 0.068
0.8 105.0 0.141 0.051 0.01
-0.8 135.0 0.12 0.035 0.006
-0.4 135.0 0.169 0.058 0.022
0.0 135.0 0.328 0.119 0.041
0.4 135.0 0.143 0.104 0.048
0.8 135.0 -0.036 0.05 0.005
-0.8 165.0 0.188 0.033 0.008
-0.4 165.0 0.171 0.042 0.012
0.0 165.0 0.086 0.041 0.004
0.4 165.0 0.299 0.076 0.045
0.8 165.0 0.097 0.037 0.007