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Measurement E102M269

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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=0/180 and 90/270 degrees. From fit to angular xs with constraint that fitted xs be positive over all phi.

Publication:

Quantity measured: AsymTT, dimensionless
Cross section asymmetry between phi*=0/180 and 90/270 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): AsymTT, 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
AsymTT,
dimensionless
Negative uncertainty,
dimensionless
Positive uncertainty,
dimensionless
Systematic errors,
dimensionless
-0.9 0.092 0.117 0.112 0.006
-0.7 -0.103 0.114 0.108 0.022
-0.5 -0.29 0.107 0.099 0.011
-0.3 -0.504 0.038 0.043 0.002
-0.1 -0.171 0.082 0.076 0.065
0.1 0.111 0.065 0.062 0
0.3 0.136 0.064 0.062 0.01
0.5 -0.268 0.075 0.073 0.013
0.7 -0.204 0.099 0.094 0.005
0.9 -0.735 0.067 0.096 0.009