Measurement E151M1881

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:	0.0792
Q²:	0.0844 GeV²
W:	1595.0 GeV
E_beam:	1.9889 GeV
ε:	0.8139

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.45	78.0	0.6001	0.9446
0.45	282.0	0.7608	0.909
0.55	222.0	0.8554	0.8925
0.55	270.0	0.7052	0.8073
0.55	282.0	-0.1363	0.9335
0.65	126.0	1.1609	0.8687
0.65	150.0	1.0123	0.8747
0.65	198.0	0.055	1.0071
0.65	210.0	0.7609	0.9671
0.65	222.0	-0.7104	0.7255
0.65	294.0	0.5606	0.7555
0.75	126.0	-0.511	0.8484
0.75	138.0	0.2778	0.8917
0.75	210.0	1.2553	0.8756
0.75	222.0	1.156	0.9119
0.75	234.0	-1.1135	0.6409
0.75	246.0	0.5195	0.9325
0.75	270.0	0.5278	0.8609
0.75	282.0	-0.885	0.6856
0.75	294.0	0.1947	0.7126
0.85	102.0	-0.6755	0.8443
0.85	114.0	-1.46	0.8724
0.85	210.0	-0.9162	0.8975
0.85	222.0	0.6888	0.6348
0.85	234.0	-2.6162	2.6162
0.85	246.0	0.5328	0.7983
0.95	234.0	0.3573	0.8743

CLAS Physics Database