Measurement E151M1717

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:	0.7126
Q²:	0.1715 GeV²
W:	1265.0 GeV
E_beam:	1.9889 GeV
ε:	0.9373

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.15	66.0	-0.0053	0.6382
0.25	66.0	-0.5902	0.5602
0.35	66.0	-0.7133	0.4703
0.35	78.0	0.6169	0.6217
0.45	66.0	-0.4342	0.559
0.45	78.0	0.0371	0.5094
0.45	282.0	0.3991	0.563
0.55	270.0	-0.1814	0.4932
0.55	282.0	0.1603	0.4478
0.65	102.0	0.4871	0.7135
0.65	258.0	-1.0935	0.6107
0.65	270.0	-0.4236	0.4614
0.65	282.0	-0.2098	0.4192
0.75	90.0	0.1811	0.5519
0.75	102.0	-0.0607	0.5332
0.75	114.0	0.6339	0.6191
0.75	258.0	0.2516	0.4017
0.75	270.0	0.8344	0.4778
0.75	282.0	-0.5473	0.394
0.75	294.0	-0.1493	0.5409
0.85	78.0	0.1533	0.5759
0.85	90.0	-0.6014	0.4353
0.85	102.0	0.9459	0.4663
0.85	114.0	0.1452	0.4692
0.85	126.0	0.9886	0.4547
0.85	138.0	-0.5996	0.5983
0.85	246.0	-0.0435	0.4898
0.85	258.0	-0.1266	0.4886
0.85	270.0	0.6533	0.413
0.85	282.0	-0.23	0.4823
0.85	294.0	0.7874	0.5023
0.95	78.0	0.0222	0.5442
0.95	90.0	0.2858	0.496
0.95	102.0	0.597	0.4576
0.95	114.0	0.0345	0.423
0.95	126.0	1.0691	0.4226
0.95	138.0	-0.807	0.4656
0.95	150.0	0.203	0.5443
0.95	162.0	0.2301	0.6417
0.95	246.0	0.9538	0.5785
0.95	258.0	0.286	0.593
0.95	270.0	0.1411	0.4794

CLAS Physics Database