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Measurement E151M19

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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 : 0.205 GeV2
W : 1205 GeV
ε : 0.7681
Ebeam : 1.0539 GeV
εL: 0.9194 

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
0.35 294 0.0144 0.5335 0.03
0.45 282 0.2634 0.4552 0.0424
0.45 294 -0.0114 0.4766 0.03
0.55 270 0.1391 0.4651 0.0339
0.55 282 -0.2645 0.4051 0.0425
0.65 270 0.5756 0.4587 0.072
0.65 282 0.8915 0.5357 0.1058
0.85 126 0.4493 0.5816 0.0593