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Measurement E102M189

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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 and 180 degrees. From fit to angular xs with constraint that fitted xs be positive over all phi.

Publication:

Quantity measured: AsymLT, 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 : 0.6 — 1 GeV2
W : 1.53 — 1.55 GeV

Observable quantity measured (Y axis): AsymLT, 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
AsymLT,
dimensionless
Negative uncertainty,
dimensionless
Positive uncertainty,
dimensionless
Systematic errors,
dimensionless
-0.9 0.015 0.046 0.046 0.002
-0.7 0.051 0.053 0.054 0.005
-0.5 0.057 0.053 0.055 0.001
-0.3 0.159 0.075 0.082 0.029
-0.1 -0.157 0.072 0.079 0.051
0.1 0.124 0.092 0.106 0.056
0.3 0.178 0.09 0.102 0.049
0.5 0.371 0.121 0.146 0.043
0.7 0.314 0.094 0.105 0.05
0.9 0.098 0.071 0.072 0.014