CLAS Physics Database

Measurement E102M197

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: 1.69 — 1.71 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 0.245 None 0.023
-0.7 1.0 None 0.0
-0.5 -0.094 None 0.004
-0.3 0.951 None 0.36
-0.1 -0.551 None 0.011
0.1 -0.102 None 0.161
0.3 0.114 None 0.088
0.5 -0.532 None 0.022
0.7 -0.29 None 0.057
0.9 -0.272 None 0.012