Measurement E102M295

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:	1.65 — 1.69 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	0.438	None	0.06
-0.7	1.0	None	0.095
-0.5	-0.207	None	0.001
-0.3	-0.094	None	0.083
-0.1	0.44	None	0.007
0.1	-0.339	None	0.075
0.3	-0.029	None	0.224
0.5	-0.201	None	0.019
0.7	-0.027	None	0.005
0.9	0.598	None	0.155

CLAS Physics Database