Measurement E151M1827

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_LL
ε_L:	0.3319
Q²:	0.2915 GeV²
W:	1475.0 GeV
E_beam:	1.9889 GeV
ε:	0.8139

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	282.0	0.1402	0.8456
0.55	114.0	-1.1966	0.7829
0.65	90.0	-0.5418	0.8738
0.65	102.0	1.1562	0.6928
0.65	114.0	0.9727	0.8662
0.65	246.0	-1.5665	0.7163
0.65	258.0	-0.5987	0.7261
0.75	90.0	-1.7502	0.7805
0.75	102.0	1.8015	0.6862
0.75	114.0	0.8335	0.7818
0.75	126.0	0.4238	0.8516
0.75	246.0	0.0938	0.8364
0.75	258.0	-1.0137	0.6865
0.75	270.0	1.3095	0.6588
0.85	114.0	-0.6525	0.7081
0.85	234.0	0.4512	0.7123
0.85	246.0	0.4431	0.6288
0.85	258.0	-0.1497	0.6893
0.85	270.0	-0.5979	0.7289
0.85	282.0	-0.4006	0.747
0.95	246.0	-0.9095	0.6237
0.95	258.0	0.4216	0.6144
0.95	270.0	0.5095	0.6773
0.95	282.0	0.2588	0.6084
0.95	294.0	0.5422	0.6889

CLAS Physics Database