CLAS Physics Database

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Measurement E102M296

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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 :	1.67 — 1.71 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	0.043	0.851	0.952	0.112
-0.7	0.814	0.116	0.167	0.031
-0.5	-0.382	0.296	0.414	0.02
-0.3	0.001	0.769	0.775	0.113
-0.1	-1	0	0.87	0.122
0.1	-0.415	0.323	0.323	0.02
0.3	-0.428	0.195	0.472	0.059
0.5	-0.021	0.581	0.356	0.109
0.7	0.321	0.504	0.304	0.108
0.9	0.729	0.301	0.224	0.081