CLAS Physics Database

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Measurement E102M292

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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 :	1.61 — 1.63 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	0.051	0.129	0.129	0.001
-0.7	0.072	0.163	0.17	0.027
-0.5	0.278	0.267	0.2	0.023
-0.3	-0.281	0.294	0.232	0.085
-0.1	-0.075	0.257	0.221	0.011
0.1	-0.038	0.176	0.237	0.047
0.3	-0.288	0.348	0.289	0.023
0.5	-0.05	0.295	0.253	0.016
0.7	-0.14	0.308	0.597	0.061
0.9	-0.158	0.842	0.832	0.112