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Measurement E102M186

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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:

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 : 0.2 — 0.4 GeV2
W : 1.59 — 1.61 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 0.195 0.145 0.193 0.101
-0.7 0.03 0.123 0.163 0.053
-0.5 0.398 0.193 0.274 0.012
-0.3 1 0.126 0 0
-0.1 0.183 0.126 0.158 0.112
0.1 0.086 0.076 0.086 0.048
0.3 0.026 0.069 0.076 0.003
0.5 -0.085 0.102 0.112 0.021
0.7 0.078 0.131 0.16 0.008
0.9 1 0.494 0 0