CLAS Physics Database

Measurement E102M206

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: 1.55 — 1.57 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 0.061 None 0.007
-0.7 -0.104 None 0.025
-0.5 0.063 None 0.021
-0.3 0.26 None 0.033
-0.1 0.196 None 0.123
0.1 0.154 None 0.06
0.3 0.235 None 0.082
0.5 -0.101 None 0.052
0.7 -0.001 None 0.079
0.9 0.105 None 0.014