Measurement E151M556

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:	0.4157
Q²:	0.205 GeV²
W:	1385.0 GeV
E_beam:	1.9889 GeV
ε:	0.8894

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.25	66.0	1.5789	0.7358
0.35	66.0	0.5232	0.7023
0.35	78.0	-1.2872	0.5453
0.65	90.0	0.1045	0.6436
0.65	102.0	0.8881	0.5376
0.65	114.0	0.4534	0.72
0.65	258.0	0.1426	0.6688
0.65	270.0	0.4666	0.6698
0.75	90.0	-0.0845	0.5571
0.75	102.0	0.0095	0.511
0.75	114.0	0.6608	0.5639
0.75	126.0	0.181	0.603
0.75	234.0	0.3833	0.6408
0.75	246.0	0.4037	0.5576
0.75	258.0	-0.7027	0.4451
0.75	270.0	0.3285	0.5375
0.75	282.0	1.52	0.6712
0.85	90.0	-0.272	0.5789
0.85	102.0	0.7959	0.5339
0.85	114.0	0.5139	0.6328
0.85	126.0	0.3793	0.6151
0.85	138.0	-0.1174	0.6964
0.85	222.0	0.2544	0.6419
0.85	234.0	0.0815	0.649
0.85	246.0	-0.5363	0.4475
0.85	258.0	0.288	0.5228
0.85	270.0	-0.4247	0.4498
0.85	282.0	0.5635	0.5883
0.95	66.0	1.3913	0.6382
0.95	102.0	-0.0576	0.5708
0.95	126.0	0.8682	0.641
0.95	138.0	0.4016	0.6324
0.95	222.0	-0.063	0.5545
0.95	234.0	0.4172	0.6608
0.95	246.0	0.03	0.4898
0.95	258.0	0.2026	0.4349
0.95	270.0	0.6528	0.4337
0.95	282.0	-0.118	0.435
0.95	294.0	1.4362	0.562

CLAS Physics Database