CLAS Physics Database

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Measurement E102M201

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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 and 180 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_LT, dimensionless
Cross section asymmetry between phi*= 0 and 180 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 :	1.77 — 1.79 GeV

Observable quantity measured (Y axis): Asym_LT, 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_LT, dimensionless	Negative uncertainty, dimensionless	Positive uncertainty, dimensionless	Systematic errors, dimensionless
-0.9	-0.253	0.747	1.253	0.104
-0.7	1	0.817	0	0
-0.5	1	0.924	0	0
-0.3	-0.034	0.481	1.034	0.138
-0.1	1	0.67	0	0
0.1	-0.075	0.424	1.075	0.077
0.3	-0.169	0.301	0.413	0.012
0.5	-0.068	0.213	0.252	0.009
0.7	-0.256	0.261	0.278	0.022
0.9	-0.928	0.072	0.566	0.081