CLAS Physics Database

Measurement E102M271

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: 0.6 — 1.0 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 -0.082 None 0.002
-0.7 -0.032 None 0.007
-0.5 0.066 None 0.002
-0.3 0.075 None 0.014
-0.1 0.114 None 0.025
0.1 0.04 None 0.036
0.3 0.001 None 0.015
0.5 0.133 None 0.033
0.7 0.054 None 0.024
0.9 0.048 None 0.006