CLAS Physics Database

Measurement E102M287

Experiment: E-89-039
Year: 2007

Measurement comment:

Electron beam energy is 2.567 Gev. Fitted cross section asymmetry between phi=0/180 and 90/270 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: AsymTT
Q2: 1.0 — 1.4 GeV2
W: 1.51 — 1.53 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) AsymTT uncertainty syst. uncert.
-0.9 -0.081 None 0.011
-0.7 0.019 None 0.008
-0.5 -0.037 None 0.013
-0.3 -0.226 None 0.015
-0.1 -0.1 None 0.019
0.1 -0.174 None 0.024
0.3 -0.112 None 0.008
0.5 0.146 None 0.019
0.7 -0.029 None 0.008
0.9 0.071 None 0.003