CLAS Physics Database

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Measurement E102M281

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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 :	0.6 — 1 GeV²
W :	1.71 — 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	-0.669	0.296	0.379	0.029
-0.7	-0.231	0.59	0.612	0.002
-0.5	0.528	0.352	0.332	0.025
-0.3	-0.073	0.4	0.307	0.018
-0.1	-0.013	0.39	0.285	0.005
0.1	-0.211	0.354	0.26	0.067
0.3	-0.223	0.316	0.247	0.041
0.5	0.155	0.198	0.175	0.018
0.7	0.078	0.21	0.182	0.027
0.9	-0.486	0.18	0.324	0.008