Measurement E102M291

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:	1.59 — 1.61 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	-0.024	None	0.037
-0.7	-0.217	None	0.019
-0.5	0.048	None	0.044
-0.3	-0.271	None	0.02
-0.1	-0.404	None	0.007
0.1	-0.016	None	0.001
0.3	0.388	None	0.02
0.5	0.029	None	0.064
0.7	0.123	None	0.007
0.9	0.053	None	0.016

CLAS Physics Database