CLAS Physics Database

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Measurement E102M297

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Experiment: E-89-039, 2007

Spokespersons: S. Dytman, K. Giovanetti

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.

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 //

Quantity measured: Asym_TT, dimensionless
Cross section asymmetry between phi*=0/180 and 90/270 degrees.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: η p, polarization: none

Q² :	1 — 1.4 GeV²
W :	1.69 — 1.73 GeV

Observable quantity measured (Y axis): Asym_TT, dimensionless
Plot measurement data

Parameter (X axis): cos(θ), dimensionless

Click here to get data in text file, delimited with tabs.

Measured data:

cos(θ), dimensionless	Asym_TT, dimensionless	Negative uncertainty, dimensionless	Positive uncertainty, dimensionless	Systematic errors, dimensionless
-0.9	0.104	0.861	0.837	0.185
-0.7	-0.52	0.48	1.52	0.083
-0.5	-0.511	0.331	0.63	0.001
-0.3	0.134	0.765	0.512	0.042
-0.1	-0.466	0.449	0.415	0.038
0.1	0.909	0.239	0.064	0.001
0.3	0.267	0.564	0.371	0.113
0.5	-0.294	0.706	0.504	0.082
0.7	-0.248	0.415	0.389	0.006
0.9	0.045	0.36	0.345	0.071