CLAS Physics Database

Measurement E102M200

Experiment: E-89-039
Year: 2007

Measurement comment:

Electron beam energy is 2.567 Gev. Fitted cross section asymmetry between phi=0 and 180 degrees. 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: AsymLT
Q2: 0.6 — 1.0 GeV2
W: 1.75 — 1.77 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) AsymLT uncertainty syst. uncert.
-0.9 0.058 None 0.324
-0.7 1.0 None 0.0
-0.5 0.057 None 0.052
-0.3 -1.0 None 0.077
-0.1 0.247 None 0.16
0.1 -0.496 None 0.002
0.3 -0.549 None 0.016
0.5 -0.299 None 0.013
0.7 -0.139 None 0.011
0.9 -0.068 None 0.025