CLAS Physics Database

Measurement E102M58

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: 1.93 — 1.95 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 -0.007 0.009 0.003
-0.4 15.0 -0.009 0.008 0.002
0.0 15.0 -0.015 0.016 0.002
0.4 15.0 0.081 0.025 0.004
0.8 15.0 0.107 0.028 0.009
-0.8 45.0 0.0 0.012 0.0
-0.4 45.0 -0.011 0.02 0.002
0.0 45.0 0.037 0.031 0.006
0.4 45.0 0.092 0.048 0.011
0.8 45.0 0.05 0.031 0.002
-0.8 75.0 0.024 0.022 0.004
-0.4 75.0 0.018 0.015 0.001
0.0 75.0 0.048 0.028 0.004
0.4 75.0 0.055 0.024 0.004
0.8 75.0 0.117 0.03 0.009
-0.4 105.0 0.028 0.016 0.003
0.0 105.0 0.045 0.023 0.002
0.4 105.0 0.068 0.027 0.006
0.8 105.0 0.144 0.039 0.015
-0.8 135.0 0.007 0.044 0.001
-0.4 135.0 0.027 0.026 0.002
0.0 135.0 0.047 0.044 0.017
0.4 135.0 0.04 0.022 0.002
0.8 135.0 0.079 0.051 0.008
-0.8 165.0 0.01 0.026 0.002
0.4 165.0 0.048 0.042 0.004
0.8 165.0 0.14 0.063 0.019