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Measurement E151M39

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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 : 1235 GeV
ε : 0.7395
Ebeam : 1.0539 GeV
εL: 0.7393 

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
0.45 282 -0.2365 0.5727 0.0403
0.55 270 -0.7485 0.3919 0.0903
0.55 282 -0.2831 0.5389 0.044
0.65 294 -0.3986 0.5096 0.0544
0.75 270 -0.2984 0.4753 0.0453
0.85 126 -0.2191 0.56 0.039
0.85 150 -0.0001 0.564 0.03
0.95 186 -0.0416 0.4606 0.0304