CLAS Physics Database

Measurement E102M191

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: 1.57 — 1.59 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 0.01 None 0.005
-0.7 0.104 None 0.007
-0.5 0.174 None 0.026
-0.3 0.283 None 0.108
-0.1 -0.062 None 0.071
0.1 0.186 None 0.042
0.3 0.004 None 0.017
0.5 0.045 None 0.028
0.7 0.424 None 0.048
0.9 0.36 None 0.026