CLAS Physics Database

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Measurement E102M277

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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 :	1.63 — 1.65 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	-0.236	0.127	0.128	0.028
-0.7	-0.294	0.171	0.228	0.005
-0.5	0.236	0.282	0.231	0.018
-0.3	-0.363	0.104	0.243	0.025
-0.1	-0.195	0.259	0.227	0.019
0.1	-0.013	0.245	0.219	0.019
0.3	-0.349	0.141	0.158	0.022
0.5	-0.476	0.238	0.374	0.026
0.7	-0.635	0.191	0.207	0.003
0.9	-0.554	0.446	1.554	0.081