CLAS Physics Database

Measurement E102M100

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: 1.53 — 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 //

Measurement data
cos(θ) dσ/dΩT+ε·dσ/dΩL, [μb/sr] uncertainty syst. uncert.
-0.9 1.006 None 0.054
-0.7 0.693 None 0.138
-0.5 1.349 None 0.249
-0.3 1.456 None 0.191
-0.1 1.482 None 0.15
0.1 1.246 None 0.076
0.3 1.031 None 0.043
0.5 1.017 None 0.047
0.7 1.065 None 0.037
0.9 0.722 None 0.054