Measurement E151M574

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:	0.4355
Q²:	0.2915 GeV²
W:	1415.0 GeV
E_beam:	1.9889 GeV
ε:	0.8474

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty	syst. uncert.
0.25	66.0	0.6405	0.7994	0.0493
0.35	294.0	-1.1467	0.5591	0.0763
0.65	102.0	1.7585	0.7215	0.1117
0.65	258.0	-1.4357	0.4142	0.0928
0.75	90.0	-0.5976	0.6135	0.0473
0.75	102.0	-0.2124	0.5943	0.0327
0.75	114.0	0.0604	0.7662	0.0302
0.75	246.0	0.5555	0.6951	0.0453
0.75	258.0	0.7322	0.7243	0.0539
0.75	270.0	0.0131	0.6324	0.03
0.75	282.0	0.0011	0.7868	0.03
0.85	90.0	-0.5897	0.6277	0.0469
0.85	102.0	0.2241	0.658	0.033
0.85	114.0	-0.748	0.5151	0.0547
0.85	234.0	1.3817	0.7581	0.0897
0.85	246.0	0.2844	0.6551	0.0347
0.85	258.0	-0.7998	0.5153	0.0574
0.85	270.0	-0.4705	0.5387	0.0416
0.85	282.0	-0.3127	0.4464	0.0356
0.85	294.0	-0.0409	0.6637	0.0301
0.85	306.0	-0.5872	0.5672	0.0468
0.95	234.0	0.0514	0.5682	0.0302
0.95	270.0	0.2935	0.579	0.035
0.95	282.0	0.6252	0.6437	0.0486
0.95	294.0	0.5267	0.5945	0.044
0.95	306.0	1.0575	0.6278	0.0713

CLAS Physics Database