CLAS Physics Database

Measurement E102M38

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: 1.53 — 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 0.652 0.071
-0.4 15.0 0.6 0.065
0.0 15.0 0.703 0.066
0.4 15.0 0.695 0.069
0.8 15.0 0.424 0.056
-0.8 45.0 0.62 0.067
-0.4 45.0 0.512 0.057
0.0 45.0 0.514 0.063
0.4 45.0 0.527 0.065
0.8 45.0 0.303 0.058
-0.8 75.0 0.57 0.059
-0.4 75.0 0.497 0.056
0.0 75.0 0.592 0.071
0.4 75.0 0.385 0.061
0.8 75.0 0.432 0.064
-0.8 105.0 0.386 0.049
-0.4 105.0 0.478 0.065
0.0 105.0 0.386 0.069
0.4 105.0 0.595 0.097
0.8 105.0 0.42 0.068
-0.8 135.0 0.421 0.049
-0.4 135.0 0.532 0.07
0.0 135.0 0.513 0.076
0.4 135.0 0.481 0.088
0.8 135.0 0.359 0.069
-0.8 165.0 0.46 0.051
-0.4 165.0 0.408 0.052
0.0 165.0 0.487 0.063
0.4 165.0 0.482 0.059
0.8 165.0 0.442 0.067