CLAS Physics Database

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Measurement E102M183

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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 :	1.53 — 1.55 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	0.019	0.04	0.042	0.021
-0.7	0.794	0.614	0.206	0.313
-0.5	-0.274	0.05	0.057	0.078
-0.3	-0.331	0.036	0.039	0.063
-0.1	-0.335	0.038	0.042	0.003
0.1	-0.089	0.055	0.061	0.001
0.3	-0.065	0.057	0.063	0.017
0.5	-0.117	0.059	0.067	0.008
0.7	-0.314	0.04	0.044	0.005
0.9	0.156	0.079	0.091	0.013