Measurement E102M298

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:	Asym_TT
Q²:	1.0 — 1.4 GeV²
W:	1.71 — 1.75 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)	Asym_TT	uncertainty	syst. uncert.
-0.9	0.932	None	0.897
-0.7	-0.678	None	0.002
-0.5	0.94	None	0.097
-0.3	-0.516	None	0.134
-0.1	-1.0	None	0.143
0.1	0.38	None	0.095
0.3	-0.909	None	0.287
0.5	-0.258	None	0.093
0.7	-0.899	None	0.413
0.9	-0.717	None	0.191

CLAS Physics Database