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Measurement E151M160

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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 : 0.0844 GeV2
W : 1415 GeV
ε : 0.6236
Ebeam : 1.0539 GeV
εL: 0.1275 

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 0.4441 0.8881 0.0588
0.35 54 -0.3818 0.8475 0.0528
0.55 234 1.6558 0.8253 0.1908
0.55 246 -0.1519 0.6696 0.0346
0.55 258 0.4624 0.6807 0.0606
0.65 138 1.2713 0.9835 0.1477
0.65 234 0.5811 0.8456 0.0726
0.65 246 1.1605 0.7636 0.1354
0.65 258 0.9515 0.709 0.1123
0.65 270 -0.3466 0.6581 0.0496
0.75 150 1.2006 0.8838 0.1398
0.75 234 -0.1472 0.6702 0.0344
0.75 246 0.3456 0.598 0.0495
0.75 258 0.4564 0.6081 0.06
0.75 270 -1.2029 0.5223 0.1401
0.85 234 0.4076 0.7611 0.0552
0.85 246 0.6116 0.5387 0.0758
0.85 258 0.484 0.6037 0.0627
0.85 270 0.5499 0.6079 0.0694
0.85 282 -0.6576 0.6318 0.0806
0.95 258 -1.2565 0.4721 0.1461