Measurement E151M879

Experiment:	EG4
Year:	2016	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).
Spokesperson:	Xiaochao Zheng
Reaction:	ep → π⁺n
Polarization:	beam (longitudinal), target (longitudinal)
Quantity:	A_UL
ε_L:	0.1699
Q²:	0.1715 GeV²
W:	1565.0 GeV
E_beam:	2.2596 GeV
ε:	0.8519

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.65	114.0	-0.1077	0.836	0.0316
0.75	114.0	-0.6525	0.8326	0.0673
0.85	78.0	0.4444	0.9984	0.0508
0.85	222.0	1.0603	0.9224	0.1024
0.85	246.0	1.0379	0.8001	0.1004
0.95	258.0	0.534	2.1803	0.0577
0.55	114.0	-0.2082	0.7519	0.033
0.65	126.0	-0.9546	0.7196	0.0695
0.75	114.0	-0.0175	0.749	0.03
0.75	126.0	0.2485	0.7907	0.0341
0.85	78.0	-0.5889	0.7425	0.0489
0.85	222.0	-0.8896	0.8363	0.0656
0.85	234.0	0.1339	0.781	0.0313
0.85	246.0	-0.4692	0.8195	0.043
0.85	258.0	-0.46	0.8159	0.0426
0.95	210.0	1.7108	1.483	0.1162
0.95	258.0	1.1664	1.3052	0.0822

CLAS Physics Database