CLAS Physics Database

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Measurement E102M185

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Experiment: E-89-039, 2007

Spokespersons: S. Dytman, K. Giovanetti

Measurement comment: Electron beam energy is 1.515 Gev. Fitted cross section asymmetry between phi=0 and 180 degrees. From fit to angular xs with constraint that 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 :	0.2 — 0.4 GeV²
W :	1.57 — 1.59 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	0.118	0.081	0.091	0.054
-0.7	-0.194	0.094	0.124	0.085
-0.5	-0.099	0.087	0.107	0.011
-0.3	0.363	0.123	0.153	0.016
-0.1	0.251	0.189	0.282	0.148
0.1	0.281	0.131	0.168	0.052
0.3	0.032	0.083	0.098	0.049
0.5	0.014	0.083	0.097	0.049
0.7	0.497	0.189	0.255	0.107
0.9	0.076	0.185	0.29	0.016