CLAS Physics Database

Measurement E102M53

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: 1.83 — 1.85 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 0.01 0.016
-0.4 15.0 0.006 0.011
0.0 15.0 0.032 0.016
0.4 15.0 0.059 0.021
0.8 15.0 0.029 0.019
-0.8 45.0 -0.047 0.02
-0.4 45.0 -0.005 0.015
0.0 45.0 0.032 0.029
0.4 45.0 0.085 0.049
0.8 45.0 0.055 0.03
-0.8 75.0 0.035 0.03
-0.4 75.0 0.003 0.047
0.0 75.0 0.057 0.032
0.4 75.0 0.084 0.026
0.8 75.0 0.089 0.029
-0.8 105.0 0.03 0.031
-0.4 105.0 0.013 0.029
0.0 105.0 0.123 0.03
0.4 105.0 0.105 0.026
0.8 105.0 0.109 0.034
-0.8 135.0 0.012 0.071
-0.4 135.0 0.06 0.041
0.0 135.0 0.139 0.043
0.4 135.0 0.105 0.078
0.8 135.0 0.036 0.043
-0.8 165.0 0.002 0.03