CLAS Physics Database

Measurement E102M98

Experiment: E-89-039
Year: 2007

Measurement comment:

Electron beam energy is 1.515 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: 0.2 — 0.4 GeV2
W: 1.49 — 1.51 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 0.941 None 0.142
-0.7 0.798 None 0.098
-0.5 0.727 None 0.058
-0.3 0.907 None 0.141
-0.1 0.717 None 0.112
0.1 0.787 None 0.081
0.3 0.686 None 0.056
0.5 0.708 None 0.076
0.7 0.701 None 0.073
0.9 0.7 None 0.033