CLAS Physics Database

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Measurement E102M279

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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 :	1.67 — 1.69 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	-0.222	0.263	0.254	0.027
-0.7	-0.066	0.552	0.428	0.053
-0.5	-0.201	0.318	0.261	0.032
-0.3	-0.05	0.219	0.441	0.008
-0.1	0.116	0.336	0.268	0.011
0.1	-0.759	0.187	0.407	0.026
0.3	0.092	0.378	0.255	0.009
0.5	-0.464	0.5	0.385	0.034
0.7	-0.75	0.192	0.382	0.016
0.9	-0.573	0.254	0.392	0.004