CLAS Physics Database

Measurement E102M39

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: 1.55 — 1.57 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 0.567 0.062
-0.4 15.0 0.542 0.06
0.0 15.0 0.605 0.061
0.4 15.0 0.381 0.054
0.8 15.0 0.246 0.048
-0.8 45.0 0.597 0.064
-0.4 45.0 0.535 0.057
0.0 45.0 0.481 0.057
0.4 45.0 0.375 0.054
0.8 45.0 0.374 0.054
-0.8 75.0 0.501 0.055
-0.4 75.0 0.462 0.059
0.0 75.0 0.587 0.08
0.4 75.0 0.406 0.072
0.8 75.0 0.371 0.059
-0.8 105.0 0.472 0.051
-0.4 105.0 0.541 0.077
0.0 105.0 0.437 0.106
0.4 105.0 0.3 0.11
0.8 105.0 0.272 0.067
-0.8 135.0 0.53 0.057
-0.4 135.0 0.423 0.064
0.0 135.0 0.549 0.114
0.4 135.0 0.494 0.124
0.8 135.0 0.304 0.067
-0.8 165.0 0.313 0.043
-0.4 165.0 0.374 0.05
0.0 165.0 0.363 0.065
0.4 165.0 0.403 0.067
0.8 165.0 0.385 0.056