Measurement E151M575

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:	0.4696
Q²:	0.348 GeV²
W:	1415.0 GeV
E_beam:	1.9889 GeV
ε:	0.8278

Slice: cos(θ_π⁺) =

Measurement data
cos(θ_π⁺)	φ(π⁺), [deg]	A_UL	uncertainty
0.65	90.0	0.5425	0.7397
0.65	102.0	0.1936	0.7729
0.65	114.0	-0.5507	0.6996
0.75	90.0	-1.2115	0.5679
0.75	114.0	0.263	0.714
0.75	234.0	0.0849	0.6888
0.75	270.0	-0.5395	0.5279
0.85	66.0	-0.2832	0.6673
0.85	102.0	-0.5559	0.6263
0.85	114.0	-0.7004	0.6017
0.85	258.0	0.0286	0.6724
0.85	270.0	-0.2922	0.6295
0.85	282.0	1.3846	0.6432
0.95	126.0	0.4635	0.7179
0.95	222.0	0.7556	0.7264
0.95	270.0	0.8778	0.6735
0.95	294.0	0.308	0.581
0.95	306.0	0.3937	0.6182

CLAS Physics Database