Measurement E151M1867

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:	0.1221
Q²:	0.1205 GeV²
W:	1565.0 GeV
E_beam:	1.9889 GeV
ε:	0.821

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	66.0	0.6042	0.9563	0.0473
0.35	270.0	-1.3787	0.8917	0.0888
0.45	282.0	-0.6726	0.7759	0.0506
0.55	138.0	1.0754	0.8984	0.0717
0.55	222.0	0.4416	0.8523	0.0402
0.55	234.0	-0.728	0.9374	0.0533
0.65	114.0	1.4982	0.7478	0.0956
0.65	126.0	-2.1416	0.6876	0.1332
0.65	138.0	2.12	0.7769	0.1319
0.65	210.0	-0.1856	0.9603	0.032
0.65	222.0	1.669	0.8351	0.1055
0.65	234.0	-1.6013	0.8683	0.1016
0.75	114.0	-0.469	0.7145	0.0413
0.75	126.0	-0.6495	0.7597	0.0495
0.75	138.0	0.8921	0.8966	0.0618
0.75	198.0	-1.6639	0.7897	0.1052
0.75	210.0	0.614	0.6865	0.0478
0.75	222.0	-0.0676	0.7902	0.0303
0.75	234.0	0.4866	0.6867	0.0421
0.75	246.0	-1.5267	0.7085	0.0973
0.75	282.0	-1.2824	0.8549	0.0833
0.85	90.0	0.6356	0.7863	0.0488
0.85	102.0	-0.2061	0.9259	0.0325
0.85	138.0	-1.0527	0.7813	0.0705
0.85	210.0	0.3194	0.7902	0.0357
0.85	222.0	0.5977	0.6581	0.047
0.85	234.0	1.3825	0.5987	0.089
0.85	246.0	-0.1183	0.6755	0.0308
0.95	102.0	0.4463	0.7962	0.0404
0.95	210.0	0.4636	0.8285	0.0411
0.95	234.0	-0.2395	0.7618	0.0333
0.95	246.0	0.5218	0.7195	0.0436

CLAS Physics Database