CLAS Physics Database

Measurement E102M37

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: 1.51 — 1.53 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 0.495 0.064
-0.4 15.0 0.677 0.067
0.0 15.0 0.589 0.064
0.4 15.0 0.677 0.07
0.8 15.0 0.394 0.058
-0.8 45.0 0.69 0.07
-0.4 45.0 0.565 0.062
0.0 45.0 0.605 0.066
0.4 45.0 0.509 0.065
0.8 45.0 0.369 0.059
-0.8 75.0 0.442 0.06
-0.4 75.0 0.462 0.058
0.0 75.0 0.533 0.068
0.4 75.0 0.501 0.064
0.8 75.0 0.41 0.062
-0.8 105.0 0.49 0.058
-0.4 105.0 0.537 0.061
0.0 105.0 0.485 0.075
0.4 105.0 0.506 0.077
0.8 105.0 0.432 0.064
-0.8 135.0 0.445 0.05
-0.4 135.0 0.492 0.061
0.0 135.0 0.54 0.067
0.4 135.0 0.57 0.074
0.8 135.0 0.469 0.064
-0.8 165.0 0.521 0.057
-0.4 165.0 0.494 0.056
0.0 165.0 0.519 0.064
0.4 165.0 0.496 0.064
0.8 165.0 0.518 0.065