Measurement E151M1908

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:	0.0374
Q²:	0.0496 GeV²
W:	1655.0 GeV
E_beam:	1.9889 GeV
ε:	0.78

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty	syst. uncert.
0.35	78.0	0.804	0.8295	0.0572
0.35	90.0	-0.1699	0.8591	0.0317
0.35	270.0	0.1627	0.8108	0.0316
0.45	78.0	0.6354	0.6784	0.0488
0.45	90.0	-0.9043	0.8959	0.0625
0.45	138.0	-0.0573	0.8745	0.0302
0.45	258.0	0.3484	0.8136	0.0367
0.45	270.0	-0.7103	0.568	0.0525
0.45	282.0	0.7124	0.7191	0.0526
0.55	114.0	-1.0405	0.8053	0.0698
0.55	126.0	0.043	0.8904	0.0301
0.55	138.0	0.5679	0.7937	0.0457
0.55	210.0	-0.5295	0.836	0.0439
0.55	258.0	-0.6549	0.6856	0.0497
0.55	270.0	-0.2192	0.6094	0.0328
0.55	282.0	-0.4549	0.7516	0.0407
0.65	138.0	-0.2551	0.7403	0.0337
0.65	150.0	-0.45	0.8202	0.0405
0.65	210.0	-1.6752	0.5562	0.1059
0.65	222.0	-0.7748	0.667	0.0557
0.65	234.0	-0.1481	0.7786	0.0313
0.65	282.0	0.0393	0.8065	0.0301
0.65	294.0	0.0586	0.7672	0.0302
0.75	66.0	0.089	0.6963	0.0305
0.75	78.0	0.0538	0.7516	0.0302
0.75	138.0	-0.345	0.8688	0.0366
0.75	198.0	-0.6698	0.6416	0.0505
0.75	210.0	-0.8566	0.6005	0.06
0.75	222.0	-0.5172	0.5371	0.0434
0.75	234.0	-0.6083	0.7481	0.0475
0.75	258.0	-0.9261	0.706	0.0636
0.75	270.0	-0.5448	0.5871	0.0446
0.75	282.0	0.1694	0.5232	0.0317
0.75	294.0	-0.5788	0.669	0.0462
0.85	102.0	0.5159	0.7346	0.0433
0.85	114.0	0.0303	0.6818	0.0301
0.85	126.0	-0.6632	0.6992	0.0502
0.85	198.0	-0.7066	0.6911	0.0523
0.85	210.0	-0.7639	0.7379	0.0552
0.85	222.0	-0.6974	0.5745	0.0518
0.85	234.0	0.8016	0.6264	0.0571
0.85	246.0	-0.9627	0.6828	0.0656
0.95	222.0	-0.7455	0.7128	0.0542

CLAS Physics Database