CLAS Physics Database

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Measurement E102M182

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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 :	1.51 — 1.53 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	-0.085	0.035	0.036	0.014
-0.7	0.305	0.07	0.077	0.015
-0.5	-0.33	0.114	0.178	0.027
-0.3	-0.324	0.056	0.066	0.148
-0.1	-0.24	0.051	0.057	0.133
0.1	-0.141	0.053	0.06	0.076
0.3	-0.401	0.035	0.039	0.025
0.5	-0.306	0.042	0.046	0.037
0.7	0.055	0.088	0.105	0.011
0.9	0.082	0.054	0.059	0.021