CLAS Physics Database

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Measurement E102M181

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Experiment: E-89-039, 2007

Spokespersons: S. Dytman, K. Giovanetti

Measurement comment: Electron beam energy is 1.515 Gev. Fitted cross section asymmetry between phi=0 and 180 degrees. From fit to angular xs with constraint that 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 :	0.2 — 0.4 GeV²
W :	1.49 — 1.51 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	-0.12	0.034	0.034	0.019
-0.7	0.046	0.047	0.048	0.001
-0.5	0.147	0.052	0.055	0.008
-0.3	-0.143	0.053	0.058	0.047
-0.1	0.009	0.071	0.08	0.035
0.1	0.165	0.09	0.104	0.035
0.3	0.299	0.084	0.095	0.043
0.5	0.049	0.072	0.083	0.081
0.7	0.002	0.054	0.059	0.01
0.9	0.104	0.042	0.044	0.027