CLAS Physics Database

Measurement E102M42

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: 1.3 — 2.1 GeV2
W: 1.61 — 1.63 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 0.198 0.036 0.02
-0.4 15.0 0.201 0.035 0.014
0.0 15.0 0.238 0.039 0.018
0.4 15.0 0.103 0.028 0.016
0.8 15.0 0.021 0.026 0.003
-0.8 45.0 0.203 0.036 0.015
-0.4 45.0 0.233 0.04 0.013
0.0 45.0 0.224 0.042 0.013
0.4 45.0 0.109 0.036 0.016
0.8 45.0 0.071 0.027 0.01
-0.8 75.0 0.199 0.033 0.026
-0.4 75.0 0.166 0.054 0.016
0.0 75.0 0.131 0.073 0.022
0.4 75.0 0.186 0.07 0.027
0.8 75.0 0.043 0.037 0.004
-0.8 105.0 0.199 0.042 0.008
-0.4 105.0 0.262 0.09 0.038
0.8 105.0 0.025 0.055 0.006
-0.8 135.0 0.236 0.038 0.025
0.8 135.0 -0.046 0.046 0.011
-0.8 165.0 0.193 0.037 0.014
-0.4 165.0 0.143 0.046 0.026
0.0 165.0 0.232 0.079 0.044
0.4 165.0 -0.08 0.052 0.023
0.8 165.0 0.043 0.038 0.006