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 syst. uncert.
-0.8 15.0 0.652 0.071 0.055
-0.4 15.0 0.6 0.065 0.032
0.0 15.0 0.703 0.066 0.03
0.4 15.0 0.695 0.069 0.06
0.8 15.0 0.424 0.056 0.03
-0.8 45.0 0.62 0.067 0.032
-0.4 45.0 0.512 0.057 0.028
0.0 45.0 0.514 0.063 0.009
0.4 45.0 0.527 0.065 0.026
0.8 45.0 0.303 0.058 0.024
-0.8 75.0 0.57 0.059 0.015
-0.4 75.0 0.497 0.056 0.039
0.0 75.0 0.592 0.071 0.036
0.4 75.0 0.385 0.061 0.04
0.8 75.0 0.432 0.064 0.008
-0.8 105.0 0.386 0.049 0.008
-0.4 105.0 0.478 0.065 0.066
0.0 105.0 0.386 0.069 0.075
0.4 105.0 0.595 0.097 0.147
0.8 105.0 0.42 0.068 0.035
-0.8 135.0 0.421 0.049 0.025
-0.4 135.0 0.532 0.07 0.018
0.0 135.0 0.513 0.076 0.122
0.4 135.0 0.481 0.088 0.121
0.8 135.0 0.359 0.069 0.011
-0.8 165.0 0.46 0.051 0.007
-0.4 165.0 0.408 0.052 0.007
0.0 165.0 0.487 0.063 0.031
0.4 165.0 0.482 0.059 0.035
0.8 165.0 0.442 0.067 0.014