CLAS Physics Database

Measurement E102M59

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: 1.95 — 1.97 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
-0.8 15.0 0.009 0.01
-0.4 15.0 0.012 0.012
0.0 15.0 0.023 0.019
0.4 15.0 0.099 0.029
0.8 15.0 0.027 0.027
-0.8 45.0 0.022 0.013
-0.4 45.0 0.001 0.02
0.0 45.0 0.011 0.017
0.4 45.0 0.134 0.063
0.8 45.0 0.079 0.036
-0.8 75.0 -0.012 0.01
-0.4 75.0 0.034 0.024
0.0 75.0 0.047 0.024
0.4 75.0 0.05 0.019
0.8 75.0 0.102 0.026
-0.4 105.0 0.027 0.015
0.0 105.0 0.021 0.021
0.4 105.0 0.052 0.025
0.8 105.0 0.134 0.034
-0.8 135.0 0.01 0.05
-0.4 135.0 0.025 0.018
0.0 135.0 0.099 0.085
0.4 135.0 0.049 0.026
0.8 135.0 0.088 0.033
0.4 165.0 0.031 0.06
0.8 165.0 0.063 0.059