CLAS Physics Database

Measurement E102M54

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: 1.85 — 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 0.019 0.015 0.001
-0.4 15.0 0.022 0.014 0.003
0.0 15.0 -0.003 0.013 0.0
0.4 15.0 0.054 0.02 0.006
0.8 15.0 0.029 0.014 0.002
-0.8 45.0 0.007 0.014 0.001
-0.4 45.0 0.02 0.016 0.001
0.0 45.0 -0.013 0.035 0.001
0.4 45.0 0.04 0.04 0.005
0.8 45.0 0.054 0.027 0.005
-0.8 75.0 0.043 0.028 0.001
-0.4 75.0 0.036 0.038 0.003
0.0 75.0 -0.025 0.035 0.007
0.4 75.0 0.052 0.024 0.006
0.8 75.0 0.087 0.032 0.005
-0.4 105.0 -0.004 0.028 0.001
0.0 105.0 0.109 0.032 0.007
0.4 105.0 0.132 0.03 0.005
0.8 105.0 0.121 0.032 0.013
-0.4 135.0 0.066 0.038 0.003
0.0 135.0 0.047 0.034 0.002
0.4 135.0 0.038 0.069 0.005
0.8 135.0 0.197 0.079 0.006
-0.8 165.0 -0.041 0.029 0.001