CLAS Physics Database

Measurement E102M45

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: 1.67 — 1.69 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 0.069 0.026
-0.4 15.0 0.108 0.029
0.0 15.0 0.036 0.024
0.4 15.0 0.019 0.023
0.8 15.0 0.033 0.027
-0.8 45.0 0.061 0.025
-0.4 45.0 0.109 0.032
0.0 45.0 0.064 0.031
0.4 45.0 0.08 0.032
0.8 45.0 0.05 0.03
-0.8 75.0 0.072 0.033
-0.4 75.0 0.044 0.04
0.4 75.0 0.025 0.044
0.8 75.0 0.056 0.04
-0.8 105.0 0.047 0.044
0.0 105.0 0.105 0.057
0.4 105.0 0.026 0.041
0.8 105.0 0.177 0.079
-0.8 135.0 0.006 0.044
0.0 135.0 -0.001 0.056
0.4 135.0 0.093 0.051
0.8 135.0 0.066 0.057
-0.8 165.0 0.093 0.041
-0.4 165.0 0.147 0.066
0.8 165.0 0.035 0.082