CLAS Physics Database

Measurement E102M80

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: 1.85 — 1.87 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 -0.002 0.017 0.002
-0.4 15.0 0.029 0.021 0.003
0.0 15.0 0.029 0.021 0.004
0.4 15.0 0.017 0.022 0.002
0.8 15.0 0.057 0.026 0.017
-0.8 45.0 0.009 0.018 0.002
-0.4 45.0 0.056 0.027 0.01
0.0 45.0 0.014 0.032 0.001
0.4 45.0 0.045 0.03 0.007
0.8 45.0 0.019 0.017 0.002
-0.8 75.0 0.014 0.015 0.001
-0.4 75.0 -0.013 0.015 0.004
0.0 75.0 0.001 0.022 0.0
0.4 75.0 0.031 0.019 0.004
0.8 75.0 -0.007 0.017 0.001
-0.8 105.0 -0.007 0.029 0.003
-0.4 105.0 -0.017 0.04 0.003
0.0 105.0 0.025 0.025 0.001
0.4 105.0 0.043 0.019 0.002
0.8 105.0 0.051 0.035 0.011
-0.8 135.0 -0.005 0.037 0.003
-0.4 135.0 -0.046 0.039 0.01
0.0 135.0 0.019 0.036 0.004
0.4 135.0 0.027 0.046 0.0
0.8 135.0 0.001 0.027 0.001
-0.8 165.0 -0.007 0.014 0.002