Measurement E102M290

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:	1.57 — 1.59 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	0.056	None	0.002
-0.7	-0.017	None	0.016
-0.5	0.041	None	0.017
-0.3	0.251	None	0.003
-0.1	-0.08	None	0.026
0.1	-0.055	None	0.109
0.3	0.091	None	0.039
0.5	0.065	None	0.006
0.7	-0.168	None	0.024
0.9	-0.024	None	0.089

CLAS Physics Database