CLAS Physics Database

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Measurement E102M280

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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 :	1.69 — 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	0.086	0.256	0.272	0.038
-0.7	-0.592	0.232	0.676	0.021
-0.5	0.03	0.607	0.485	0.054
-0.3	-0.658	0.302	0.724	0.078
-0.1	0.186	0.265	0.205	0.016
0.1	-0.519	0.407	0.408	0.114
0.3	-0.653	0.285	0.324	0.043
0.5	-0.451	0.367	0.276	0.026
0.7	-0.263	0.262	0.211	0.05
0.9	0.319	0.242	0.211	0.022