Measurement E151M1866

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:	0.1057
Q²:	0.101 GeV²
W:	1565.0 GeV
E_beam:	1.9889 GeV
ε:	0.8288

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_LL	uncertainty
0.35	294.0	-0.7789	0.9198
0.45	78.0	0.6855	0.8252
0.45	126.0	-2.1826	0.7593
0.45	282.0	0.9069	0.8135
0.55	114.0	0.4607	0.9397
0.55	126.0	-0.3505	0.838
0.55	270.0	-0.0209	0.9247
0.55	282.0	-1.2554	0.6696
0.65	102.0	-1.2772	0.9427
0.65	114.0	-0.3069	0.7715
0.65	126.0	-0.1186	0.7273
0.65	138.0	-0.2091	0.9063
0.65	198.0	0.1856	0.9841
0.65	222.0	1.2296	0.6615
0.65	234.0	-0.7994	0.667
0.65	294.0	1.0084	0.7534
0.75	114.0	-0.0425	0.7859
0.75	126.0	0.0134	0.7532
0.75	138.0	-0.2627	0.782
0.75	150.0	-0.2235	0.8698
0.75	210.0	0.0929	0.8026
0.75	222.0	0.4338	0.6987
0.75	234.0	0.3382	0.6168
0.75	246.0	1.1462	0.7468
0.75	282.0	-0.1209	0.6807
0.75	294.0	-0.1857	0.8098
0.85	90.0	-0.7739	0.8379
0.85	114.0	1.5977	0.7666
0.85	126.0	0.163	0.9195
0.85	210.0	-1.7257	0.702
0.85	222.0	-1.2204	0.6323
0.85	234.0	-0.2029	0.651
0.85	246.0	1.1367	0.6655
0.95	114.0	-0.7906	0.7959
0.95	222.0	0.1717	0.6924
0.95	234.0	1.1203	0.7073

CLAS Physics Database