CLAS Physics Database

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Measurement E102M282

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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 :	1.73 — 1.75 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	0.693	0.777	0.001
-0.7	0.632	0.411	0.258	0.105
-0.5	-0.015	0.616	0.441	0.017
-0.3	-0.561	0.244	0.559	0.171
-0.1	-0.734	0.161	0.486	0.02
0.1	-0.012	0.254	0.208	0.003
0.3	-0.088	0.405	0.338	0.004
0.5	-0.364	0.188	0.17	0.017
0.7	-0.263	0.231	0.21	0.015
0.9	-0.234	0.472	0.347	0.024