CLAS Physics Database

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Measurement E102M295

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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 :	1 — 1.4 GeV²
W :	1.65 — 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	0.438	0.407	0.36	0.06
-0.7	1	0.603	0	0.095
-0.5	-0.207	0.589	0.457	0.001
-0.3	-0.094	0.417	0.743	0.083
-0.1	0.44	0.484	0.389	0.007
0.1	-0.339	0.661	0.932	0.075
0.3	-0.029	0.971	0.516	0.224
0.5	-0.201	0.673	0.444	0.019
0.7	-0.027	0.254	0.335	0.005
0.9	0.598	0.549	0.4	0.155