CLAS Physics Database

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Measurement E102M208

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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 :	1 — 1.4 GeV²
W :	1.59 — 1.61 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	0.141	0.098	0.104	0.015
-0.7	0.089	0.152	0.189	0.008
-0.5	0.354	0.24	0.374	0.05
-0.3	1	0.242	0	0
-0.1	1	0.461	0	0
0.1	0.203	0.233	0.378	0.009
0.3	-0.034	0.174	0.24	0.006
0.5	-0.003	0.227	0.392	0.04
0.7	-0.318	0.185	0.303	0.054
0.9	-0.374	0.289	0.327	0.016