CLAS Physics Database

Measurement E102M210

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: 1.63 — 1.65 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 -0.113 None 0.007
-0.7 0.613 None 0.09
-0.5 1.0 None 0.0
-0.3 0.453 None 0.039
-0.1 0.377 None 0.039
0.1 -0.113 None 0.052
0.3 0.306 None 0.076
0.5 -0.122 None 0.047
0.7 -0.433 None 0.059
0.9 0.755 None 1.755