CLAS Physics Database

Measurement E102M40

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: 1.57 — 1.59 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 0.506 0.061
-0.4 15.0 0.349 0.047
0.0 15.0 0.525 0.055
0.4 15.0 0.325 0.048
0.8 15.0 0.303 0.049
-0.8 45.0 0.402 0.051
-0.4 45.0 0.28 0.041
0.0 45.0 0.346 0.05
0.4 45.0 0.348 0.048
0.8 45.0 0.233 0.04
-0.8 75.0 0.445 0.052
-0.4 75.0 0.241 0.049
0.0 75.0 0.576 0.095
0.4 75.0 0.268 0.073
0.8 75.0 0.19 0.056
-0.8 105.0 0.36 0.047
-0.4 105.0 0.436 0.082
0.8 105.0 0.104 0.059
-0.8 135.0 0.451 0.052
-0.4 135.0 0.173 0.056
0.8 135.0 0.243 0.064
-0.8 165.0 0.365 0.044
-0.4 165.0 0.341 0.049
0.0 165.0 0.422 0.067
0.4 165.0 0.267 0.073
0.8 165.0 0.159 0.051