Measurement E102M331

Experiment:	E-89-039
Year:	2007	Measurement comment: Electron beam energy is 4.056 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:	2.1 — 2.9 GeV²
W:	1.61 — 1.63 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.
-0.8	-0.161	None	0.008
-0.4	0.057	None	0.005
0.0	0.371	None	0.028
0.4	0.444	None	0.106
0.8	-1.0	None	0.0

CLAS Physics Database