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Measurement E151M84

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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 : 0.0071 GeV2
W : 1325 GeV
ε : 0.8432
Ebeam : 1.0539 GeV
εL: 0.027 

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
0.55 42 2.1787 0.8206 0.2497
0.55 222 -0.3476 0.7273 0.0496
0.55 234 0.2898 0.6692 0.0446
0.55 246 -0.6447 0.6207 0.0793
0.65 54 -0.4654 0.6301 0.0609
0.65 222 -0.7001 0.5604 0.0851
0.65 234 0.8801 0.6394 0.1045
0.65 246 0.9276 0.6619 0.1097
0.65 258 -0.4399 0.6208 0.0584
0.75 222 0.7451 0.7845 0.0899
0.75 234 0.3703 0.5217 0.0517
0.75 246 -0.6911 0.4988 0.0842
0.75 258 1.5076 0.6194 0.1741
0.85 222 -0.7392 0.6205 0.0893
0.85 234 0.9095 0.6264 0.1077
0.85 246 0.675 0.5591 0.0824