Measurement E151M1851

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:	0.1213
Q²:	0.101 GeV²
W:	1535.0 GeV
E_beam:	1.9889 GeV
ε:	0.8485

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.25	66.0	-0.7736	0.9063
0.35	66.0	-0.0185	0.8486
0.35	78.0	0.0943	0.8509
0.35	282.0	-0.8541	0.7389
0.35	294.0	-0.8951	0.7111
0.45	78.0	0.5776	0.7484
0.45	90.0	-0.4901	0.9208
0.45	270.0	0.6133	0.7097
0.45	282.0	-0.587	0.7866
0.45	294.0	-0.2093	0.7861
0.55	102.0	-0.4486	0.9782
0.55	114.0	0.6927	0.769
0.55	222.0	1.1883	0.8086
0.55	234.0	-0.3096	0.7965
0.55	246.0	0.8186	0.8279
0.55	258.0	1.1058	0.8339
0.55	270.0	-1.5093	0.6767
0.55	282.0	-2.3475	2.3475
0.65	66.0	-0.4486	0.8934
0.65	78.0	1.9841	0.725
0.65	102.0	0.1051	0.8682
0.65	114.0	0.6823	0.6908
0.65	126.0	-0.573	0.7662
0.65	138.0	-0.7363	0.7122
0.65	210.0	-0.6392	0.872
0.65	222.0	0.9337	0.6409
0.65	234.0	0.9496	0.6342
0.65	294.0	-0.2474	0.6282
0.65	306.0	-0.3273	0.8251
0.75	66.0	-0.4415	0.9057
0.75	102.0	-1.0583	0.6726
0.75	114.0	-0.9472	0.655
0.75	126.0	-0.6027	0.6471
0.75	138.0	-0.0407	0.638
0.75	210.0	0.4604	0.8704
0.75	222.0	-0.692	0.639
0.75	234.0	-0.2246	0.6055
0.75	246.0	0.0777	0.6889
0.75	282.0	1.0872	0.7457
0.75	294.0	0.1614	0.8082
0.85	90.0	0.2475	0.7503
0.85	102.0	-1.1609	0.7083
0.85	210.0	-0.3417	0.6496
0.85	222.0	0.1514	0.6401
0.85	234.0	-0.0773	0.6172
0.85	246.0	0.3077	0.6361
0.85	258.0	0.3066	0.7227
0.95	114.0	0.4599	0.7406
0.95	222.0	-0.8422	0.6609
0.95	234.0	-0.6715	0.5243
0.95	246.0	0.838	0.5723
0.95	258.0	-0.5819	0.7249

CLAS Physics Database