CLAS Physics Database

Measurement E102M208

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: 1.0 — 1.4 GeV2
W: 1.59 — 1.61 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 0.141 None 0.015
-0.7 0.089 None 0.008
-0.5 0.354 None 0.05
-0.3 1.0 None 0.0
-0.1 1.0 None 0.0
0.1 0.203 None 0.009
0.3 -0.034 None 0.006
0.5 -0.003 None 0.04
0.7 -0.318 None 0.054
0.9 -0.374 None 0.016