Measurement E151M603

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:	0.2713
Q²:	0.205 GeV²
W:	1475.0 GeV
E_beam:	1.9889 GeV
ε:	0.8458

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.25	66.0	0.2221	0.7155
0.25	294.0	0.4039	0.7171
0.35	66.0	-1.2157	0.5207
0.35	78.0	-0.1008	0.718
0.35	282.0	-0.5526	0.6109
0.35	306.0	-0.7039	0.5926
0.45	66.0	-0.5723	0.6831
0.45	78.0	1.0192	0.7387
0.45	282.0	0.9182	0.6926
0.45	294.0	-0.8529	0.5416
0.55	66.0	-0.0392	0.6926
0.55	114.0	-0.3939	0.627
0.55	282.0	0.4477	0.6952
0.55	306.0	-0.7188	0.5782
0.65	102.0	0.2759	0.6715
0.65	114.0	1.0251	0.6604
0.65	126.0	-1.0379	0.5245
0.65	222.0	-0.3647	0.6294
0.65	234.0	0.813	0.7213
0.65	246.0	0.6806	0.6261
0.65	258.0	0.0399	0.6574
0.65	294.0	-0.0351	0.684
0.75	90.0	0.7754	0.7541
0.75	102.0	-0.8157	0.5123
0.75	114.0	-0.4857	0.5124
0.75	126.0	-0.6067	0.5388
0.75	210.0	1.0201	0.7678
0.75	234.0	-0.0225	0.6036
0.75	246.0	0.4771	0.5406
0.75	258.0	1.1062	0.5231
0.75	270.0	1.6332	0.6726
0.85	78.0	0.7422	0.8168
0.85	102.0	0.3036	0.6331
0.85	114.0	0.205	0.5876
0.85	126.0	-0.7305	0.5611
0.85	138.0	-0.785	0.5774
0.85	210.0	0.9943	0.7505
0.85	222.0	0.9357	0.6802
0.85	234.0	1.1473	0.5789
0.85	246.0	0.9958	0.4676
0.85	258.0	-0.3659	0.5118
0.85	270.0	0.6429	0.5159
0.85	282.0	-0.7276	0.5771
0.95	78.0	0.1273	0.6641
0.95	90.0	-0.7609	0.5376
0.95	222.0	1.1361	0.6258
0.95	234.0	-0.307	0.5729
0.95	246.0	0.8679	0.598
0.95	258.0	-0.2246	0.4782
0.95	270.0	0.0664	0.5638
0.95	282.0	0.4549	0.5639
0.95	294.0	0.3176	0.6056

CLAS Physics Database