CLAS Physics Database

Measurement E102M203

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: 1.49 — 1.51 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 0.011
-0.7 0.165 None 0.003
-0.5 0.139 None 0.013
-0.3 0.036 None 0.019
-0.1 -0.107 None 0.011
0.1 0.173 None 0.027
0.3 0.236 None 0.002
0.5 0.263 None 0.012
0.7 0.125 None 0.006
0.9 0.004 None 0.001