Measurement E151M1875

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:	0.03
Q²:	0.0291 GeV²
W:	1595.0 GeV
E_beam:	1.9889 GeV
ε:	0.8364

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	78.0	-1.0946	0.904
0.35	282.0	0.2778	0.9456
0.45	78.0	-1.1593	0.7736
0.45	258.0	-0.8074	0.8906
0.45	270.0	0.0896	0.9197
0.55	78.0	-2.2983	0.7214
0.55	126.0	1.5901	0.7693
0.55	138.0	-0.3119	0.9369
0.55	150.0	-0.1676	0.9609
0.55	258.0	-0.9057	0.848
0.55	270.0	-0.6752	0.835
0.55	282.0	-1.0714	0.8707
0.65	114.0	0.6238	0.8913
0.65	126.0	-1.9317	0.7228
0.65	210.0	0.1123	0.9449
0.65	222.0	-1.5122	0.8123
0.75	66.0	-1.5023	0.9693
0.75	78.0	0.01	0.887
0.75	138.0	0.6675	0.9708
0.75	210.0	-0.1002	0.8094
0.75	222.0	-0.7844	0.7544
0.75	234.0	1.3899	0.8113
0.75	258.0	1.1421	0.8728
0.75	270.0	-0.4713	0.8244
0.75	282.0	-1.0713	0.6743
0.85	114.0	-1.1757	0.7558
0.85	126.0	0.0726	0.7749
0.85	138.0	0.1547	0.9611
0.85	198.0	0.4224	0.875
0.85	210.0	0.3153	0.8038
0.85	222.0	0.0699	0.7416
0.85	234.0	0.5569	0.8914
0.85	270.0	-1.3942	0.8189

CLAS Physics Database