Measurement E102M265

Experiment:	E-89-039
Year:	2007	Measurement comment: Electron beam energy is 1.515 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:	0.2 — 0.4 GeV²
W:	1.51 — 1.53 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	-0.04	None	0.003
-0.7	0.18	None	0.028
-0.5	0.278	None	0.014
-0.3	0.247	None	0.072
-0.1	0.134	None	0.041
0.1	0.028	None	0.059
0.3	0.256	None	0.004
0.5	0.243	None	0.001
0.7	0.18	None	0.017
0.9	0.267	None	0.019

CLAS Physics Database