Measurement E151M1811

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:	0.3463
Q²:	0.2445 GeV²
W:	1445.0 GeV
E_beam:	1.9889 GeV
ε:	0.8482

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.15	66.0	0.4949	0.9048	0.0424
0.35	66.0	1.0333	0.6789	0.0694
0.35	282.0	0.2707	0.8419	0.0342
0.35	294.0	-0.9454	0.8254	0.0647
0.55	114.0	-1.3995	0.7866	0.09
0.65	102.0	1.2973	0.6694	0.0841
0.65	114.0	-0.1523	0.6877	0.0314
0.65	258.0	1.1084	0.7997	0.0736
0.75	90.0	-0.5153	0.6518	0.0433
0.75	102.0	0.5143	0.6827	0.0433
0.75	114.0	0.1169	0.764	0.0308
0.75	126.0	-0.12	0.8462	0.0309
0.75	234.0	0.1779	0.7451	0.0319
0.75	246.0	0.442	0.7764	0.0402
0.75	258.0	-0.5083	0.7175	0.043
0.75	270.0	0.3593	0.6817	0.0371
0.85	66.0	-1.1959	0.7672	0.0784
0.85	78.0	1.0342	0.7264	0.0695
0.85	90.0	1.1654	0.7915	0.0767
0.85	102.0	0.9035	0.8357	0.0624
0.85	114.0	-0.583	0.6917	0.0463
0.85	126.0	0.3933	0.7661	0.0383
0.85	210.0	1.3347	0.8597	0.0863
0.85	234.0	-0.7124	0.7017	0.0526
0.85	246.0	-0.4794	0.7217	0.0418
0.85	258.0	-0.4545	0.5921	0.0407
0.85	270.0	0.1711	0.7237	0.0317
0.85	282.0	-0.0407	0.6346	0.0301
0.95	234.0	-0.4299	0.7487	0.0397
0.95	258.0	-0.2322	0.6892	0.0331
0.95	270.0	0.7338	0.6141	0.0536
0.95	282.0	-0.5698	0.6507	0.0457
0.95	294.0	-0.0458	0.6541	0.0301

CLAS Physics Database