CLAS Physics Database

Measurement E102M64

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: 1.53 — 1.55 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 0.278 0.047
-0.4 15.0 0.324 0.057
0.0 15.0 0.34 0.055
0.4 15.0 0.312 0.058
0.8 15.0 0.244 0.057
-0.8 45.0 0.289 0.046
-0.4 45.0 0.272 0.048
0.0 45.0 0.366 0.059
0.4 45.0 0.276 0.053
0.8 45.0 0.362 0.053
-0.8 75.0 0.248 0.039
-0.4 75.0 0.187 0.047
0.0 75.0 0.305 0.055
0.4 75.0 0.314 0.068
0.8 75.0 0.302 0.067
-0.8 105.0 0.2 0.044
-0.4 105.0 0.306 0.059
0.0 105.0 0.187 0.058
0.4 105.0 0.122 0.055
0.8 105.0 0.222 0.053
-0.8 135.0 0.236 0.038
-0.4 135.0 0.257 0.06
0.0 135.0 0.218 0.059
0.4 135.0 0.099 0.053
0.8 135.0 0.192 0.055
-0.8 165.0 0.206 0.04
-0.4 165.0 0.167 0.04
0.0 165.0 0.278 0.055
0.4 165.0 0.194 0.049
0.8 165.0 0.213 0.043