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Measurement E151M57

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Experiment: EG4, 2016

Spokespersons: Xiaochao Zheng

Experiment comment: Final asymmetry results for the ep-> e pi+ (n) channel extracted from CLAS/EG4 data obtained using a longitudinally polarized beam and a longitudinally polarized NH3 target (CAA HS07-02).

No publications available for this experiment

Quantity measured: AUL,
Target spin asymmetry.
Beam: e, polarization: longitudinal
Target: p (Z=1, A=1), polarization: longitudinal
Final state: π+n, polarization: none

Q2 : 0.1205 GeV2
W : 1265 GeV
ε : 0.7913
Ebeam : 1.0539 GeV
εL: 0.4755 

Select data slice:
cos(θπ+) =
Observable quantity measured (Y axis): AUL,
Plot measurement data

Parameter (X axis): φ(π+), degrees

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Measured data:

cos(θπ+) φ(π+),
degrees 		AUL Data errors Systematic errors
0.15 42 -0.1119 0.7045 0.0326
0.55 270 -0.0223 0.5278 0.0301
0.55 282 1.3081 0.6274 0.1518
0.65 258 -0.2182 0.5792 0.0389
0.65 270 0.053 0.4398 0.0306
0.65 282 -0.0516 0.4825 0.0306
0.65 294 -0.1352 0.6326 0.0337
0.75 258 0.0609 0.5298 0.0308
0.75 270 -0.3932 0.4811 0.0539
0.75 282 -0.3444 0.4778 0.0494
0.75 294 -0.5476 0.5304 0.0691
0.85 114 0.251 0.5715 0.0414
0.85 138 0.5392 0.5474 0.0683
0.85 150 -0.2691 0.5426 0.0429
0.85 162 0.4926 0.5804 0.0636
0.85 174 -0.1715 0.6206 0.0358
0.85 258 -0.8851 0.4426 0.1051
0.85 270 -0.3825 0.4455 0.0529
0.85 282 -0.5012 0.4403 0.0644
0.85 294 -0.2392 0.5743 0.0405
0.95 162 -0.1271 0.5069 0.0333
0.95 174 0.1617 0.4867 0.0352
0.95 198 0.0851 0.5093 0.0315
0.95 210 -0.0378 0.5003 0.0303