Measurement E102M312

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:	1.3 — 2.1 GeV²
W:	1.75 — 1.77 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	-0.35	None	0.01
-0.4	0.777	None	0.002
0.0	0.596	None	0.057
0.4	0.048	None	0.015
0.8	0.354	None	0.002

CLAS Physics Database