CLAS Physics Database

Measurement E102M99

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: 1.51 — 1.53 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 1.159 None 0.066
-0.7 0.804 None 0.043
-0.5 1.327 None 0.102
-0.3 1.494 None 0.43
-0.1 1.297 None 0.251
0.1 1.221 None 0.194
0.3 1.425 None 0.111
0.5 1.29 None 0.102
0.7 0.88 None 0.079
0.9 0.773 None 0.056