CLAS Physics Database

Measurement E102M205

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: 1.53 — 1.55 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 0.081 None 0.005
-0.7 0.077 None 0.002
-0.5 0.085 None 0.015
-0.3 0.194 None 0.049
-0.1 0.016 None 0.053
0.1 -0.017 None 0.032
0.3 0.092 None 0.08
0.5 -0.21 None 0.048
0.7 -0.068 None 0.024
0.9 -0.011 None 0.007