CLAS Physics Database

Measurement E102M131

Experiment: E-89-039
Year: 2007

Measurement comment:

Electron beam energy is 2.567 Gev. From fit to angular xs with constraint that fitted xs be positive over all phi.
Spokespersons: S. Dytman, K. Giovanetti
Reaction: ep → η p
Polarization: none
Quantity: dσ/dΩT+ε·dσ/dΩL
Q2: 1.0 — 1.4 GeV2
W: 1.69 — 1.73 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 //

Measurement data
cos(θ) dσ/dΩT+ε·dσ/dΩL, [μb/sr] uncertainty syst. uncert.
-0.9 0.025 None 0.012
-0.7 0.021 None 0.01
-0.5 0.067 None 0.017
-0.3 0.076 None 0.012
-0.1 0.046 None 0.012
0.1 0.121 None 0.021
0.3 0.105 None 0.03
0.5 0.093 None 0.017
0.7 0.061 None 0.014
0.9 0.15 None 0.024