CLAS Physics Database

Measurement E102M123

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: 1.55 — 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 //

Measurement data
cos(θ) dσ/dΩT+ε·dσ/dΩL, [μb/sr] uncertainty syst. uncert.
-0.9 0.525 None 0.016
-0.7 0.483 None 0.028
-0.5 0.53 None 0.041
-0.3 0.477 None 0.034
-0.1 0.41 None 0.054
0.1 0.428 None 0.038
0.3 0.413 None 0.041
0.5 0.338 None 0.038
0.7 0.419 None 0.057
0.9 0.301 None 0.024